Darwin noticed that birds that were good at finding scarce food in the winter had a better chance of surviving and producing offspring. What did he call this struggle for existence?

Answers

Answer 1

Answer:

Natural selection.

Explanation:

Answer 2
Survival of the fittest

Related Questions

Match each term to its best definition

Reef
?
Area of deposition

Sand dunes
?
Continental deposit of
gravel and sand

Alluvial fan
?
Sand mounds in a desert

Sedimentary dispositional environment
?
Shoreline deposit of sediments

Beach sand
?
Calcareous skeletons from organisms build this wave-resistant structure

Answers

Answer:

Sedimentary depositional environment: Area of deposition

Alluvial fan: Continental deposit of gravel and sand

Sand dunes: Sand mounds in a desert

Beach sand: Shoreline deposit of sediment

Reef: Calcareous skeletons from organisms build this wave-resistant structure

Explanation: I finished the test, these were all right. Hope I could help ❤️

which statement provides the best argument against making major changes to the atmosphere to help protect Earth's resources​

Answers

Answer:

The options are

A. There will be less soil and dust in the air as construction increases.

B. The atmosphere will improve as more people move to large cities.

C. Making major changes to the atmosphere can be a costly process.

D. It is more important to protect land and water resources than the atmosphere.

The answer is C. Making major changes to the atmosphere can be a costly process.

Explanation:

Making major changes to the atmosphere to the atmosphere to help protect Earth's resources​ is costly because no one knows the effects of what the changes will have when effected. Another angle is effecting the changes will be a very expensive one as the atmosphere is very large and will be difficult having it happen.

This however validates making major changes to the atmosphere can be a costly process as the right option.

Answer:is c

Explanation:

it’s easy

Which government agency worked with the US Army to get samples of the penicillin mold​

Answers

Answer:

The US Department of Agriculture worked with the US Army to get samples of the penicillin mold​

Answer:

akjdcbflaksjdfkshvishzcvkbsidvhishvozshvzshcxv next time answer properly

Explanation:

HURRY 29 POINTS
Which graph best represents the relationship between sustainability and biodiversity?

Answers

Answer:

the last graph represents the best about relationship between sustainability and biodiversity.

The third graph represents the relationship between sustainability and biodiversity due to upward movement of the line.

Which graph represent relationship between sustainability and biodiversity?

Third graph best represents the relationship between sustainability and biodiversity because in this graph both sustainability and biodiversity increases as the graph goes upward.

So we can conclude that third graph represents the relationship between sustainability and biodiversity due to upward movement of the line.

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Identify the characteristic that allows the cell membrane to regulate which substances enter and exit the cell. nonpolar selectively fluid selectively permeable flexible

Answers

Explanation:

The answer is that all cells are "semi-permeable,"

this allows cells to take in only the nutrients needed...

How are rna and dna used to make proteins

Answers

Answer:

During the process of transcription, the information stored in a gene's DNA is transferred to a similar molecule called RNA (ribonucleic acid) in the cell nucleus. ... A type of RNA called transfer RNA (tRNA) assembles the protein, one amino acid at a time.

hope it helps : )

Explanation:

What is a reasonable action that provides safer water for communities?

Answers

Answer:

1.Improve sanitation facilities by providing toilets and latrines that flush into a sewer or safe enclosure.

2.Promote good hygiene habits through education. ...

3.Implement rainwater harvesting systems to collect and store rainwater for drinking or recharging underground aquifers.

what are 4 effects of global climate change

Answers

Answer:

I think I can help you.

Explanation:

I think I can help you.

answer

the 4 effects of global climate change are as follow:

1.due to more factories.

2.due to pollution.

3.due to air pollution.

4.due to water pollution.

What is the name given to the process by which pesticides build up in an organism​

Answers

Answer:

bioaccumulation

Explanation:

This build-up of toxic substances in living organisms is known as bioaccumulation.

In a modern hive of honey bee, honey is harvested from
Brood box
Top cover
The hive stand
The super

Answers

Explanation:

the process of groeing honey is Apiculture

What subject does Biomedical science fall under?

Answers

Answer:

a biomedical science degree, you will usually need five GCSEs (A-C) including maths and English, plus three A levels, preferably including biology and chemistry. Certain level 3 qualifications may be acceptable such as the diploma in applied science

Jezelyn needs to create a project that shows geographic isolation in action and decides to make a video. Which of the following would make the best project?

Answers

Answer:

a video that shows penguin species that have different mating dances

Explanation:

The question is incomplete as it does not have the options which are:

a video that shows a large river that has penguin populations on both sidesa video that shows penguin species that have different mating dancesa video that shows a penguin that is laying eggsa video that shows penguins in a tidal pool and an open ocean

Answer:

a video that shows penguin species that have different mating dances

The reproductive isolation is the factor which allows the species to evolve and form a new species, therefore, this factor is used to describe a species.

The reproductive isolation refers to a mechanism in which the species are isolated to not interbreed with the individual of other species. The reproductive isolation could be due to behavioural, psychological, physical or genetic differences. evolved as an adaptation.

In the given cases, the penguin species which shows different mating dances is considered to be reproductively isolated as the different dance rituals evolved as behaviour to prevent them from mating.

Thus, the selected option is correct.

A video that shows a large river that has penguin populations on both sides would make the best project. So, the correct option is A.

What is Population?

A population is defined as the complete set of individuals, whether that group includes a nation or a group of people with a common characteristic which is the pool of individuals from which a statistical sample is drawn for a study. .

It is described as a unit of biological community made up of a permanent group of an interbreeding individual of a species found in a space or geographic region at a particular time. Population are of three types of population pyramids created from age-sex distributions-- expansive, constrictive and stationary.

Thus, a video that shows a large river that has penguin populations on both sides would make the best project. So, the correct option is A.

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Your question is incomplete, most probably the complete question is:

Jezelyn needs to create a project that shows geographic isolation in action and decides to make a video. Which of the following would make the best project?

a video that shows a large river that has penguin populations on both sidesa video that shows penguin species that have different mating dancesa video that shows a penguin that is laying eggsa video that shows penguins in a tidal pool and an open ocean

the term evolution is best described as

Answers

Answer:

The term evolution is best described as. a process of change in a population through time.

Evolution is defined as the process of growth and development or the theory that organisms have grown and developed from past organisms. An example of evolution is how cell phones have changed over time.

HOPE IT HELPS : D

Explanation:

Evolution is a very important phenomenon, which is the change in the characteristics of species of organisms over the course of life for the purpose of better survival.

What is evolution?

The term “evolution” is best described as the process of gradual and continuous change in the inherited characteristics of a species over many generations.

This change is driven by mechanisms such as natural selection, mutation, and genetic drift, which lead to variation in traits within a population over time.

The theory of evolution by natural selection is widely accepted among scientists as the best explanation for the diversity of life on Earth. In addition to its importance in understanding the development of life on Earth, the concept of evolution has far-reaching implications for many areas of study, including medicine, agriculture, and conservation biology.

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I need to know that^?

Answers

Answer:

ok

Explanation:


1.
Which list below describes the next steps of evaporated water through the water cycle? (3 points)
Condensation, precipitation, runoff, ocean storage
Transpiration, condensation, precipitation, ocean storage
Precipitation, condensation, runoff, groundwater
Evaporation, condensation, precipitation, runoff
2.


What is a possible cost of using nonrenewable energy resources? (3 points)
Greenhouse gases
Less water pollution
Sustainable energy
Costs more money
3.


What is the benefit of recycling plastic and paper products to wildlife? (3 points)
Less expense
Clean fuel
Sustainable energy
Fewer landfills
4.


What is the next phase of the carbon cycle for the carbon source labeled A? (3 points)

Label A shows a collection of coal, oil and gas. Label B shows a collection of trees and vegetation. Label C shows sky and open atmosphere.

Photosynthesis
Ocean storage
Fossil fuel emissions
Transpiration
5.


Where is the last storage location for melted snow? (3 points)
Rivers
Ocean
Streams
Mountains
6.


How can the carbon stored in plants reach the atmosphere? (3 points)
Evaporation
Diffusion
Photosynthesis
Cellular Respiration
7.


Which statement best describes the role of plants in the water and carbon cycles? (3 points)
Plants release oxygen when they decompose take in oxygen for photosynthesis.
Plants take in carbon dioxide during photosynthesis and absorb water through their leaves and roots.
Plants take in oxygen during photosynthesis and absorb carbon dioxide through their leaves and roots.
Plants use oxygen to perform photosynthesis and release carbon dioxide as a by-product.

Answers

Answer:

1. d  

2. a  

3. d  

4. probably c  

5. b  

6. d  

7. b

Explanation: Got straight A's in all my biology classes, hope this helps!

THIS IS DUE TOMORROW - Why is it important to reduce your ecological footprint? What services do ecosystems provide for us/future generations?

Answers

Answer:

The ecological footprint (EF) estimates the biologically productive land and sea area needed to provide the renewable resources that a population consumes and to absorb the wastes it generates—using prevailing technology and resource-management practices—rather than trying to determine how many people a given land area

Ecosystem services are the benefits that people obtain from ecosystems. Ecosystem services are indispensable to the wellbeing of all people, everywhere in the world. They include provisioning, regulating, and cultural services that directly affect people, and supporting services needed to maintain the other services.

Hope it helps :)

The hero has something that sets her apart from others at the beginning. * A. The Temptation B. Crossing the Threshold C. An Unusual Birth/Early Childhood D. The Return Home

Answers

Answer: c

Explanation: you can notice she is special unlike others she has something unic. btw this belongs to inglish clas not biology sorry to break it up to you

Answer:

The Answer is C.

Explanation:

It makes more sense than the other answers...right? look at it. see it now?

Please help! 100 points! Only answer if you know :)

What are some ways that the nitrogen cycle overlaps with or influences the oxygen and carbon cycles?


Are any of these interactions between the cycles positive?


Are any negative?


What about when the nitrogen cycle is thrown off balance by the Haber-Bosch process and others like it?


How can that influence the oxygen and carbon cycles?


Are there other cycles involved that have not been mentioned in this question?


What does this discussion suggest about the nature of the Earth as one large system?

Answers

Answer:

1. Nitrification occurs when soil microbes convert ammonium into nitrate. Much of the overlap between the carbon cycle and the nitrogen cycle occurs in the soil, in processes conducted by soil microbes. Microbes break down nutrients, build new compounds for their own growth, and eventually die.

The second question im not sure sorry- the positive and negative one ;(

3. Many human activities have a significant impact on the nitrogen cycle. Burning fossil fuels, application of nitrogen-based fertilizers, and other activities can dramatically increase the amount of biologically available nitrogen in an ecosystem. As nitrogen makes up 78% of the atmosphere, there is no shortage of it – it just isn't in a form plants and animals can use.

4. Carbon makes its way through living things as carbon-based compounds, like energy molecules, fats and proteins, eventually cycling its way back into the atmosphere. Nitrogen is mainly found in the atmosphere as well and enters the ecosystems as nutrients for plants. Water, nitrogen and carbon cycles. Carbon moves from the atmosphere and back via animals and plants. Nitrogen moves from the atmosphere and back via organisms. Water moves on, above, or below the surface of the Earth.

5. Carbon cycle, Nitrogen cycle, Nutrient cycle, Oxygen cycle, Phosphorus cycle, Sulfur cycle, Rock cycle, Water cycle.

6. Wind, water, and ice erode and shape the land. Volcanic activity and earthquakes alter the landscape in a dramatic and often violent manner. And on a much longer timescale, the movement of earth's plates slowly reconfigures oceans and continents. Each one of these processes plays a role in the Arctic and Antarctica.

Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water. Earth's surface is the only habitat available to the human race. Understanding the processes by which that habitat has been created and continually altered is important to determine the causes of environmental degradation.



A medical test indicates that a patient has a defective protein. This

condition is most likely due to a change in the directions coded in the:


number of phosphate molecules

sequence of subunits in DNA

number of nitrogen bases

sequence of sugar molecules

Answers

Answer:

number of nitrogen bases

Explanation:

The correct answer would be the number of nitrogen bases.

A defective protein is usually caused by mutation, which is defined a change in the DNA sequence of an organism.

Mutation can occur in a variety of ways including:

1. Deletion of nucleotide base sequence in the DNA

2. Addition (insertion) of nucleotide base sequence in the DNA

3. Duplication of nucleotide sequence in the DNA

A change in number of phosphate molecules, sequence of subunits DNA and sequence of sugar molecules if possible in nature, do not lead to mutation if the change does not affect the sequence of DNA.

Hence, the correct option is number of nitrogen bases.


The iodine test is positive for simple sugars if the substance turns bluish purple

Answers

Answer: True

Explanation:

A mining company is interested in monazite, a mineral substance that forms in igneous rock in Earth’s interior. They think they found a lot of monazite in a sedimentary rock formation at Earth’s surface. Could this really be monazite? If so, how could the monazite have become part of sedimentary rock?

Answers

Answer:

Yes, it could have been monazite.

Monazite could have become part of sedimentary rock because it is formed during the metamorphosim of clastic sedimentary rocks. It is a resistant minerals that is found in weathered rocks debris which become concentrated and they are part of the soils and sediments found near weathered rocks.

Explanation:

Monazites are phosphate minerals that are found im small grains as accessory in igneous rocks and sedimentary rocks. It is formed during the crystallization of igneous rock and metamorphosim of clastic sedimentary rocks.

It is a resistant minerals that found in weathered rocks debris and become concentrated in sediments near weathered rocks.

How can selective breeding "force" evolution
to occur?

Answers

Answer:

Domestication accounts for a significant influence on the evolution of a species. ... Through selective breeding, we may have influenced aid to the survival of a species. Adversely, we may be leading some species to negative results. Indeed, great changes have been implemented because of selective breeding.

The only variables in the lab procedure are the
independent variable,
and
the dependent variable,

Answers

Answer:the answer is presence of worms and growth of plants

Explanation: got it right on edg


Killing pathogens and then using them to provide the body with active immunity is called ______. This is often done in young children.
When the immune system treats otherwise harmless substances, such as pollen, as if they were invaders, a/n ______ can occur.
HIV is a virus that attacks ______ in the body, weakening the immune system.
Polio used to be fairly common and devastating. Thanks to widespread vaccination against polio, the disease is now considered _______, no longer infecting nearly as many people as it once did.
Arthritis is an example of a/n _______, where part of a person’s body is identified as foreign and attacked by the person’s immune system.
Respond to the following based on your reading.

Colonization is largely blamed for bringing smallpox to the Americas. Why was this disease so devastating to Native Americans? Why can we now travel to different parts of the world and avoid contracting analogous diseases?

Answers

Answer:

Killing pathogens and then using them to provide the body with active immunity is called IMMUNIZATION . This is often done in young children.

When the immune system treats otherwise harmless substances, such as pollen, as if they were invaders, a/n ALLERGY can occur.

HIV is a virus that attacks WHITE BLOOD CELLS in the body, weakening the immune system.

Polio used to be fairly common and devastating. Thanks to widespread vaccination against polio, the disease is now considered ABSENT, no longer infecting nearly as many people as it once did.

Arthritis is an example of a/n AUTOIMMUNE DISORDER where part of a person’s body is identified as foreign and attacked by the person’s immune system.

Immunization helps involves the injection of dead pathogens into the bloodstream. This helps in the release of antibodies which helps in protecting the body against further attacks in the future.

Allergy happens as a result of the body system treating and attacking harmless substances.

This is because the ships which brought immigrants into the country had someone who had small pox on board which spread and many got infected and killed due to lack of vaccine and treatment.

Immunization helps people to travel without having to worry about diseases.

Answer:

vaccination

allergic reaction

t-cells

eradicated

autoimmune disease

Europeans had been exposed to the virus that causes smallpox for many generations, allowing them to acquire immunity to the virus. Native Americans were not exposed to smallpox or similar viruses before, so they had no immunity to the virus. In modern times, before traveling abroad, a person often receives vaccinations or other medications to avoid contracting the diseases specific to that region of the world.

Explanation:

What is the function of the part that is labeled A?

Answers

Answer: number 2

Explanation:

Answer:

The labelled part A is nasal cavity

Explanation:

The main function of nasal cavity is to moisten and filter the incoming air with a mucous membrane

Which best explains how the body mantens homeostats)
Al systems work together to statize the body
O Each system works independents to sizbize the body
O Al systems work together to match the extemal environment
Each system works independently to match the female vorment​

Answers

Answer:

All systems work together to stabilize the body.

Explanation:

Certain systems work with each other in order to maintain homeostasis, which is essential for the body. For example, when blood circulates through the digestive system, it picks up nutrients absorbed by the body during its last meal. Additionally, blood carries oxygen taken in by the lungs. The circulatory system works with the respiratory system here to distribute oxygen to other parts of the body.

The sun is located at one of the two___ in the shape of earth’s orbital path.

Answers

Answer:

foci

Explanation:

How does dermal tissue help plants on a hot day? It releases substances so plants can absorb more water from the soil It has a waxy matenal that prevents the loss of water to the environment It has guard cells that open to prevent the loss of water to the environment It contains chemical substances that allow plants to produce water.

Answers

Answer: Dermal tissues help plants on a hot day because It has a waxy material that prevents the loss of water to the environment.

Explanation:

Dermal tissues is made-up of epidermal cells which are packed closely and secrete wax curticle which prevent water loss to the environment in the hot day. They deter excess water and entering of microorganisms and insects. It covers the plant and control gas exchange and water loss.

Answer: B. It has waxy material that prevents the loss of water to the environment.

(i think this is it, if not I'm very sorry)

Think back about your experience in this lab using a dichotomous key. What might make it hard for someone to use a dichotomous key? Make a list of possible reasons.

Answers

Answer: why it is hard to use dichotomous key in the lab are;

If the organisms you want to use it for are similar.

If you can't see the little characteristics posses by the organisms you are using it for.

If all the pictures does not reveal all the important features of the organisms.

It is very difficult to use it to determine the anatomical structure.

Explanation:

Dichotomous key is an important method that is use in biology to identify organisms by separating or dividing the organisms into two groups. It is a tool created by scientists to help them identify organisms or objects. Once the organisms are group into two, more information is revealed more individually.

Answer:

The person who commented before me was correct. They should get brainliest. Below is the same thing they wrote just in paragraph form.

If the organisms you want to use it for are similar. If you can't see the little characteristics posses by the organisms you are using it for. If all the pictures does not reveal all the important features of the organisms. It is very difficult to use it to determine the anatomical structure.

As a muscle I am responsible for regulating leaving teh body

Answers

Answer:

The digestive system is in charge of squeezing energy and nutrients out of all that ... Anus: The place where solid waste exits the body.

Other Questions
A circular garden has a diameter of 12 feet. About how much trim is needed to surround the garden by placing trim on the garden's circumference? 38 ft or 48 ft or 144 ft or 432 ft Identify a transformation of the function f(x) = sqrt(x) by observing the equation of the function g(x) = sqrt(x) + 1 at davidson's bike rentals it cost $48 to rent a bike for 9 hours. how many hours of bike use does a customer get per dollar? What is the equation of the following line? Be sure to scroll down first to see all answer options.(0,0)(4,-2) Acetic acid and ethanol react to form ethyl acetate and water.If 94.0 mmol of C2H5CO2CH3 are removed from a flask containing a mixture of HCH3CO2, C2H5OH, C2H5CO2CH3 and H2O at equilibrium, then following questions are to be answered. 1. What is the rate of the reverse reaction before any C2H5CO2CH3 has been removed from the flask?2. What is the rate of the reverse reaction just after the C2H5CO2CH3 has been removed from the flask?3. What is the rate of the reverse reaction when the system has again achieved equilibrium?4. How much less C2H5CO2CH3 is in the flask when the system has again reached equilibrium? State three things you do each day that affect the environment around you. Explain how the things you do affect the environment around you. plz do both ill mark u brainliest Isabelle is mixing red paint with blue paint to make purple paint. She adds of a fluid ounce of red to of a fluid ounce of blue to make fluid ounces of purple. How many fluid ounces of red paint will she need to make 3 fluid ounces of purple paint?A. fluid ounceB. fluid ounceC. fluid ounce D. fluid ounces What would be Athena point of view in the Arachne story What is point of view? the authors opinion of the storys topic or theme the position an author takes on the moral dilemma in the story the characters view of events and their meanings in the story the way the story is presented to the reader; who is telling the story 1) How much energy would be required to melt 15.0 g of ice at 0C?= 334 J/g)(AH fusion Blossom Corp. has collected the following data concerning its maintenance costs for the past 6 months. Units Produced Total Cost July 18,070 $41,663 August 32,128 48,192 September 36,144 55,220 October 22,088 44,580 November 40,160 74,798 December 38,152 62.248 Compute the variable cost per unit using the high-low method. (Round answer to 2 decimal places, e.g. 2.25.) Variable cost per unit $ e Compute the fixed cost elements using the high-low method. Fixed costs $ Which expression is equal to the expression below?(72) B.T., a 31-year-old man who lives in a small mountain town in Colorado, is highly allergic to dust and pollen and has a history of mild asthma. B.T.'s wife drove him to the emergency room when his wheezing was unresponsive to his fluticasone/salmeterol (Advair) inhaler, he was unable to lie down, and he began to use accessory muscles to breathe. B.T. is immediately started on 4 L oxygen by nasal cannula and intravenous (IV) D5W at 75 mL/hr. A set of arterial blood gases is sent to the laboratory. B.T. appears anxious and says that he is short of breath.Vital SignsBlood pressure (BP) 152/84 mm HgPulse rate 124 beats/minRespiratory rate 42 breaths/minTemperature 100.4 F (38.4 C)1. Are B.T.'s vital signs acceptable? State your rationale.2. What is the rationale for immediately starting B.T. on O2?3. Keeping in mind B.T.'s health history and presenting complaint, what are the most important areas you need to evaluate during your physical assessment?Arterial Blood GasespH 7.31Paco2 48 mm HgHCO3 26 mmol/LPao2 55 mm HgInterpret B.T.'s arterial blood gas results.Medication OrdersAlbuterol 2.5 mg plus ipratropium 250 mcg nebulizer treatment STATAlbuterol (Ventolin) inhaler 2 puffs q4hMetaproterenol sulfate (Alupent) 0.4% nebulizer treatment q3hFluticasone (Flovent HFA) MDI: 220 mcg, 1 puff twice daily4. What is the rationale for the albuterol 2.5 mg plus ipratropium 250 mcg nebulizer treatmentSTAT (immediately)?Indicate the drug classification and expected outcome B.T. should experience with using metaproterenol sulfate (Alupent) and Fluticasone (Flovent). what is the slope from 1 to 5.3 seconds? Calcium chloride reacts with sodium hydroxide to form solid calcium hydroxide, Ca(OH)2. The balanced net ionic equation isGroup of answer choicesCa+2(aq) + 2OH-(aq) + 2 Na+(aq) + 2 Cl-(aq) Ca(OH)2(s).Ca+2(aq) + 2OH-(aq) + Na+(aq) + Cl-(aq) Ca(OH)2(s).Ca+2(aq) + 2OH-(aq) Ca(OH)2(s).CaCl2(aq) + 2NaOH(aq) CaOH(s) + NaCl(aq).CaCl2(aq) + 2NaOH(aq) Ca(OH)2(s) + 2NaCl(aq). The Field, Brown & Snow partnership was begun with investments by the partners as follows: Field, $131,700; Brown, $167,700; and Snow, $155,400. The partners decide to liquidate, sharing all losses equally. On May 31, after all assets were sold and all creditors were paid, only $47,100 in partnership cash remained.Required:a. Compute the capital account balance of each partner after the liquidation of assets and the payment of creditors. b. Assume that any partner with a deficit agrees to pay cash to the partnership to cover the deficit. Present the journal entries on May 31 to record (a) the cash receipt from the deficient partner(s) and (b) the final disbursement of cash to the partners. c. Assume that any partner with a deficit is not able to reimburse the partnership. Present journal entries (a) to transfer the deficit of any deficient partners to the other partners and (b) to record the final disbursement of cash to the partners. "There is within me (and with sadness I have watched it in others) a knot of cruelty borne by a stream of love, much as our blood sometimes bears the seed of our destruction, and at times I was mean to Doodle". What is the narrator trying to convey by putting "and with sadness I have watched it in others" in parenthesis?A.The narrator is admitting that he can recognize "cruelty" because he was "mean" himselfB. The narrator is erasing some of his own guilt by stating that others possess "cruelty" tooC. The narrator is indicating that he feels victimized by "cruelty." D.The narrator is hoping that no one will remember his "cruelty" toward Doodle y=-3x + 6y = 9What is the solution to the systems of equations I need help with problem ASAP!