please help ill mark as brainliest!! what was used to heat many homes and buildings before forced air systems became popular?
a. conductors
b. air comfort solutions
c. convectors
d. radiators
Answer: d radiators is the answer
Which statement provides the best argument against making major changes to the atmosphere to help protect Earth’s resources? There will be less soil and dust in the air as construction increases. The atmosphere will improve as more people move to large cities. Making major changes to the atmosphere can be a costly process. 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 can be a costly process.
The atmosphere refers to the layer of thin gases that lie above the surface of the earth. Plants and animals depend on the atmosphere for survival because it is region in which gaseous exchange takes place.
Changes to the atmosphere is very costly because it involves changes such as alteration in the kind of cars that are used and devising of alternative sources of energy etc. All these are expensive adventures.
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The diagram below represents a food pyramid in an ecosystem.
Hawk
Snake
Rabbit
Grass
The best explanation for the decrease in the amount of energy transferred to each
succeeding level is that much of the energy is
Оа
Ob
Ос
stored within organic materials
used in photosynthesis
released as heat and used in daily metabolism
consumed by producers
Od
Which of the following types of cells have cell walls?
A. Red Blood Cell
B. Nerve Cell
C. Cork Cell
D. Animal Cells
Answer:
cork cells
Explanation:
A cork cell has a cell wall that has a waxy substance that is impermeable to gases and water called suberin.
Give a scenario in which a new ecosystem would be created
5. Consider a system consisting of an egg in an incubator. The white and yolk of the egg contain proteins, carbohydrates, and lipids. If fertilized, the egg is transformed from a single cell to a complex organism. Discuss this irreversible process in terms of the entropy changes in the system, surroundings, and universe. Be sure that you first clearly define the system and surroundings.
Answer:
According to the question, we could consider the developing chick as the system and the surrounding of this system would be nutrients, external environment, or world and eggshell that affects the system. The entropy of the system decreases with the transformation of the development of the cell into a chick drastically.
In this system initially, it has a low entropy condition as it the surrounding have complex fuel molecule compare to the system, however, during the period of incubation the complex molecule of surrounding fuel release in the high quantity of CO2 and water molecules and leads to the higher entropy of surrounding than the decrease in the entropy of the system.
. The average adult (like Hank) is _________% water, ________% protein, _______% fat, _______% minerals, and _______% carbohydrates. 2. All the macromolecules that make you up come from ______________________________. 3. __________________________ reactions destroy the reactants that you give them, making big, complex substances smaller and __________________________ reactions reassemble the smaller products into new, bigger products. The processes behind these two sets of reactions make up your
Answer:
1. 62 percent water, 16 percent fat, 16 percent protein, 6 percent minerals, and less than 1 percent carbohydrate, along with very small amounts of vitamins and other miscellaneous substances.
2. Food.
3. Catabolic, Anabolic, Metabolism
why groups of animals are found on some islands but not others?
Answer:
Wilson has created the theory of the biogeographic nature of the island, which predicts that the number of species on the island depends on the balance between colonization, the evolution of the novel island species, and extinction.
Explanation:
A new DNA sequence containing 596 species of terrestrial birds from 41 island chains (archipelagos) around the world has been assembled by the researchers. The data combined sample data from their own field visits, research, and field samples from GeneBank colleagues. This information was utilized to build and employ a dynamic model that predicted international relationships that regulate biodiversity variation in their novel analysis approaches. In that, they confirmed two main components of MacArthur and Wilson's initial biogeography theory on the island.
The understanding of biodiversity on the island is important to conservation but also has implications beyond that – when imposing barriers to species dispersal it could enable us to assess better the effects of human activities, and it can contribute to a wider understanding of biodiversity around the globe.
Directions: Using the diagram, for A, B,C,D, and E, identify the phases of the cell cycle that the cell is going through.
Directions: For number 1-10, identify the cell structure that is being shown.
Answer:
1.Centriole
2.spindle fiber
3.chromatids
4.daughter cell
5.Chromatic
6.Cell membrane
7.Nucleolus
8.Centrioles
9.Chromosome
10.Nuclear membrane! [tex]\color{yellow}{}[/tex]
Mitosis consists of four basic phases: Prophase, Metaphase, Anaphase, and Telophase. These phases occur in strict sequential order, and cytokinesis - the process of dividing the cell contents to make two new cells - starts in anaphase or telophase. Stages of mitosis: prophase, metaphase, anaphase, telophase.
A. Prophase
Prophase is the first phase of mitosis, the process that separates the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells.B. Metaphase
Metaphase is the third phase of mitosis, the process that separates duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells.C. Anaphase
Anaphase is the fourth phase of mitosis, the process that separates the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells.D. Telophase
Telophase is the fifth and final phase of mitosis, the process that separates the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells.The third stage of mitosis, known as metaphase, is when the genetic material that was replicated and carried in the parent cell's nucleus is split into two identical daughter cells.
What are the different phases of mitosis?There are four fundamental stages of mitosis: prophase, metaphase, anaphase, and telophase.
Cytokinesis, which is the process of separating a cell's contents into two new cells, begins in either anaphase or telophase, where the phases are strictly sequentially ordered.
The division of the duplicated genetic material contained in a parent cell's nucleus into two identical daughter cells is called mitosis, and the process begins with the prophase.
Therefore, 1. Centriole 2.spindle fiber 3.chromatids. 4.daughter cell 5. Chromatic 6. Cell membrane 7. Nucleolus 8. Centrioles 9. Chromosome 10. Nuclear membrane.
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Select ALL the correct answers.
Climate change can affect biodiversity in many different ways. What are potential consequences of climate change on biodiversity?
extinction of certain species
decrease in the background extinction rate
alterations in plants' growing seasons
x
reduetion in the frequeney of natural disasters
2
flowers blooming before pollinators are active
new organisms moving into an ecosystem
Next
entum. All rights reserved
Answer:
1, 3, 5, and 6
Explanation:
Which of the following information would be most useful in determining whether 2 species are closely related?
A) There leg bones look very similar
B) The age of their bones, determined by carbon dating, is the same
C) The dna sequence found in their bones varies by only a few genes
D) The bones were found in the same layer rock
The most helpful way to determine whether two species are closely related is by comparing the appearance of their leg bones which is called as the Analogous structure. So, the correct option is A.
What is an Analogous structure?In contrast to homologous structures, analogous structures are characteristics of different species that have evolved in response to a similar environmental challenge and are similar but not necessarily in structure.
Example of Analogous structures are an insect's wings and a bird's wings are similar in structure. Although each of these species utilize their wings to fly, the origins of their wings are different.
For the aforementioned example, examining the appearance of two species' leg bones will most accurately reveal whether two species are closely related.
Therefore, the correct option is A.
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Which of the following is a result of glycolysis?
a.Usage of oxygen as a strong oxidizer
b.Production of CO2
c.Conversion of FAD+ into FADH2
d.Splitting of a glucose molecule to form two G3P molecules
The main result of glycolysis is the splitting of a glucose molecule to form two G3P molecules. The Option D.
What is the main result of glycolysis?Glycolysis, the initial step in cellular respiration involves the breakdown of glucose. One of the key outcomes of glycolysis is the splitting of a glucose molecule into two molecules of glyceraldehyde-3-phosphate (G3P).
This process occurs in the cytoplasm and does not require oxygen. Glycolysis serves as the primary source of energy production in anaerobic conditions and plays a crucial role in both aerobic and anaerobic cellular respiration.
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It rains a lot in the United Kingdom because of
Which of the following statements are true about the esophagus? Select all that apply.
The esophagus is a bony tube.
The esophagus is a muscular tube.
The esophagus moves food from the mouth to the small intestine.
The esophagus moves food from the mouth to the stomach.
Which of the following statements are true about the esophagus?
The statements that are true about the esophagus are:
The esophagus is a muscular tube.The esophagus is the muscular tube of the digestive tract that develops from the pharynx to the stomach.
The esophagus moves food from the mouth to the stomach.This part of the digestive system is traversed by food, which enters through the mouth, passes through the pharynx, crosses the esophagus and reaches the stomach.
In this process, the esophagus has an active participation, since its walls contract to promote the advance of the food.
Therefore, we can conclude that the esophagus is a muscular tube that moves food from the mouth to the stomach.
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A dry cement road is a diffuse reflector. When it rains, the water fills in all the little holes and cracks in the cement road and it becomes a smooth regular reflector. At night, when you are depending on the light from your headlights to show you the lines on the road, a wet road becomes much darker and it is more difficult to see the lines. Explain why this occurs.
Answer:
Because of reflection of light away from the marking
Explanation:
It is because the light from a vehicle falls on the road and its markings which then gets illuminated as light is reflected only in one direction.
But in case when the road is wet, light of vehicle reflects in different directions away from the markings on the road and hence they do not illuminate.
The reason why the given phenomenon about the effect of light and while driving is; Due to total internal reflection of light away from the marking.
What is reflection of light?Reflection of light is simply defined as the phenomenon where light is sent back after being incident on a surface.
Now, in this question, the light from a vehicle falls on the road and its markings and then gets illuminated as light is reflected only in one direction.
However, when the road is wet, the headlight of vehicles tend to reflect away from the markings on the road in different directions which make them not to illuminate.
Thus, we conclude that reason why the given phenomenon about the effect of light and water on driving is due to total internal reflection of light away from the marking.
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Beginning your introduction to your research paper with a question is a great way to capture the reader's interest.
True
False
Answer:
True
Explanation:
Yes it is since it intrigues to reader to go deeper into your research paper. In addition, it also gives you good dialoge for what you write/say next.
What type of invertebrate are robber crabs
Answer:
Arthropods
Explanation:
Robber crabs belong to the Phylum Arthropoda of the invertebrates in the Kingdom Animalia.
Which situation is the best example of secondary succession?
A) An organism survives a difficult winter
B) The population in an area remains the same
C) One species replaces another species in an ecosystem after a forest fire
D) Each of several species uses the same amount of resources
Answer:
The answer is C
Explanation:
Secondary succession often occurs after a disaster, the ecosystem is not as primary as the primary succession, so it will take shorter time to recover. New species will occur in this place, and rebuild a constant environment. C is exactly the situation.
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The best example of secondary succession is when one species replaces another species in an ecosystem after a forest fire. The correct option is C.
What is secondary succession?Secondary succession is a type of ecological succession that occurs on substrates that already have soil, and at least some organisms residing on it, like a forest or a community that has been disrupted by wildfire, tornadoes, or hurricanes.
The secondary succession in an ecosystem happens when a primary community is destroyed, for example, by wildfire. In secondary succession, the soil, seeds, and rhizomes survived in the soil and provides the foundation for the new community that is about to develop.
The rate of secondary succession varies according to the time taken for the primary community to regenerate, the level of disturbance of the habitat, the availability of propagules, and the dispersal capability of the species involved.
Therefore, the correct option is C.
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Which of the following represents an agricultural factor greatly decreasing the availability of crops?
Answer:
Climate.
Explanation:
Climate is the factor which is responsible for the decreasing the availability of crops because climate is the factor that allows crops to grow in the region. Suitable climatic conditions allows us to grow more plants in the region while on the other hand, less or no crops can be cultivated in the harsh climatic conditions. The plants in the harsh climatic condition are unable to grow such as desert where the temperature is very high and no rainfall occurs to support growing of crops.
Is this correct? If not plz help!
This category of endangerment has so few individual survivors that the species could soon become extinct:
A. Invasive species
B. Threatened species
C. Endangered species
D. Endemic species
E. Red list species
Answer:
Endangered Species
Explanation:
C. Endangered species
Write a 7th grade poem about weather using the words rain,snow,sleet, and hail. Don’t make it weird pls do it i beggeth u all
Answer:
In the pouring rain,
I saw his face.
A bewildered expression
Oh! what a disgrace
His skin snow-like in appearance
and his words were incoherent
But he was adherent to this grimace
I was afraid of his hate
I was afraid of our fate
Hail fell upon us as we stared at our lost state
I understood nothing could separate,
what sleet itself could not devastate.
Explanation:
Hope you like it and tell me how it goes.
PLEASE HELP ME TIMED QUIZ
Which of the following is not a factor in determining population size?
a.
the food supply
b.
birth rate
c.
available niches
d.
detritivore activity
Please select the best answer from the choices provided
A
B
C
D
Answer:
Detritivore activity is the correct answer!
Hope it helps! ❤️
Answer:
D
Explanation:
Does The translation between mRNA and amino acids is the same for all living things support the theory of evolution
Answer:
the translation between mRNA and amino acids are the same for all living sells. for example the mRNA codon CAG codes for glutamine in all living cells
What causes weather fronts to move?
Answer:
A warm air mass pushes into a colder air mass (the warm front), and then another cold air mass pushes into the warm air mass (the cold front). Because cold fronts move faster, the cold front is likely to overtake the warm front. ... The warm air rises as these air masses come together.
Explanation:
Hope this helps!!
Answer:
when warm air rises cold air covers the spot it was in so its a cycle warm air rises cold air fills its place
a tube that contains xylem and phloem
Answer:
a stem
Explanation:
Plants have tubes that run through their stems and roots. These tubes carry water, minerals, and sugars. There are two types of tubes: xylem and phloem.
What are the five ways fossils can form
Answer:
Explanation:
1.preservation of original remains
2.permineralization,
3.molds and casts,
4. replacement,
5. compression.
HOPE THIS HELPED!!!
do the digestive system provide glucose or oxygen ?
Answer:
glucose
Explanation:
The digestive system breaks food down into nutrients such as glucose. Now the circulatory system enters the picture. It transports glucose and other nutrients from the digestive system to the cells. The circulatory system also transports oxygen from the lungs to the cells.
Explain what is diffusion and osmosis? Why are they Important to the cell? Explain one example of active transport in the cell. Write a paragraph (5-7 sentences).
-if you help I really appreciate you!
Answer:
Diffusion and osmosis are both passive transport processes that act to equalize the concentration of a solution. In diffusion, particles move from an area of higher concentration to one of lower concentration until equilibrium is reached. Significance of Diffusion and Osmosis Both diffusion and osmosis are really important as these ensure the equalization of forces inside cells and also inside an organism as a whole by spreading all the necessary chemicals and nutrients from highly concentrated area to the low concentration area inside an organism. The intake of water in plants is an example of osmosis. Diffusion is observed when a drop of food coloring is added to a glass of water, where eventually, the entire water content becomes colored.
Brainliest please!
Should humans use synthetic materials that have natural material that is the same chemically? PLZ I NEED THIS NOW
Answer:
It Depends . Like Some People Use Fake Skin For Tattoos , Made To Practice Stitches , Or Injections .. It Just Really Depends On What You Are Doing If This Helps ..