Which life-forms appear to be extinct?
a. Sponges, Insects, and flowering plants.
b. Bony fishes, dinosaurs, and mammals
c. Sponges, insects, reptiles
d. trilobites, ammonoids and dinosaurs
Which life-form was most abundant 250 million years ago?
a. dinosaurs
b. reptiles
c. bony fishes
d. trilobites
Answers
Answer:
D for the first question and B for the second
Explanation:
trust
Answer:1.) D (trilobites, ammonoids and dinosaurs)
2.) B (reptiles)
Explanation:
Based on the graft
Related Questions
modeling the carbon cycle assignment Include short phrases on your poster that summarize what occurs at each stage of the carbon cycle. help
Answers
Carbon enters the atmosphere as carbon dioxide from respiration and combustion. Carbon dioxide is absorbed by producers to make glucose in photosynthesis. Animals feed on the plant passing the carbon compounds along the food chain.
During which step of the water cycle does water combine with pollutants on
Earth's surface?
Precipitation
Transpiration
Evaporation
Runoff
Water is taken in
by animals
Plants take up water
from the ground
Percolation
A. Transpiration
B. Percolation
C. Runoff
D. Precipitation
Answers
Runoff is a step in the water cycle where the water combines with pollutants on Earth's surface. Therefore, the correct statement is option D.
Plants take up water from the ground through transpiration process. Therefore, the correct statement is option A.
What is runoff water cycle?During the water cycle, when water combines with the pollutants present on the surface of the earth, the process is called runoff. During runoff, water comes from the melting snow or other resources and moves towards the surface of the land, thereby, carrying pollutants and other chemicals along with it from urban or agricultural areas and ultimately carried the pollutants into streams and rivers, and eventually into lakes and oceans.
Therefore, runoff water causes various harmful effects on human health as well as aquatic life. Therefore, runoff water should be properly treated to prevent pollution.
Plants take up water from the ground through a process called transpiration where water present in the soil gets absorbed by the roots of the plants and then further transported to the top of the plant through the stem and also into the leaves.
Therefore, runoff is a step in the water cycle where the water combines with pollutants on Earth's surface and plants take up water from the ground through transpiration process.
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How could igneous rock become sedimentary rock? Where might you see an example of this?
Answers
Answer:
igneous rock becomes sedimentary rock from weather and other elements.
Explanation:
For example: When a volcano erupts and lava spews out it hardens and becomes igneous rock but when the volcano erupts again as the lava flows over the igneous rock again it becomes sedimentary rock.
hope that makes sense
Answer:
An igneous rock is crushed into little shards of rock called sediment, the sediment is then packed together by other rocks or strong forces, that form together to make a Sedimentary rock
Explanation:
Question 1 of 10
2 Points
Blood has traveled from the heart to the fingers. Which describes the next
step of the circulation process?
A. The blood travels to the lungs to get carbon dioxide.
B. The blood returns to the heart through veins.
C. The blood releases oxygen on the way back to the heart.
0
D. The blood goes through the liver to be cleaned.
SUBMIT
Answers
Answer:
The blood returns to the heart through veins.
Explanation:
Blood returns to the heart from the body through the Vena Cava and from the lungs through the Pulmonary Vein . So mainly blood returns to the heart through Veins.
hope this helped!
Select the correct answer. Neurofibromatosis, a genetic disease caused by mutation on the NF1 gene, follows an autosomal dominant pattern of inheritance. The diagram shows that the father carries two copies of the defective gene and the mother is unaffected. What percentage of offspring will have neurofibromatosis? a diagram showing a father who has the disease neurofibromatosis (alleles RR) and the mother is unaffected (alleles rr) A. 0% B. 25% C. 50% D. 100%
Answers
Answer: c 50% not sure though but its a try
Explanation:
Answer:
its D) 100%
Explanation:
I just got a 100% on the test
the donor blood type considered to be universal
Answers
Answer:
O negative blood
Explanation:
For emergency transfusions, blood group type O negative blood is the variety of blood that has the lowest risk of causing serious reactions for most people who receive it. Because of this, it's sometimes called the universal blood donor type.
HOPE IT HELPS :)
PLEASE MARK IT THE BRAINLIEST!
Answer:
type O
Explanation:
type O, since it contains no antigens. Type O, negative, to be more speciifc (with negative referring to the Rh factor) however O Negative Is widely considered the universal blood type. It is very important because it potentially be transfused to any patient regardless of their blood type. Especially in emergency situations, when there isn't enough time to determine a patients blood type. A person with type O - is considered to be a universal donor because his blood can be safely received by a person with type A, B, AB, or O.
hope this helped!
What are some characteristics that all animals share?
Answers
Answer:
Hunting is all i can think of
Greenhouse gases absorb radiation from the sun and read it back to the atmosphere which helps to maintain a normal range of what on earth?
Answers
Answer:
Heat
Explanation:
Solar energy absorbed at Earth's surface is radiated back into the atmosphere as heat. They spread the heat back to the land and the ocean.
11. This picture shows the surface weather model at a particular location.
What type of weather is most likely expected at the location? (3 points)
fog
snowfall
hurricane
thunderstorm
Answers
_______ recycle dead plants and animals by turning them into minerals and nutrients for the soil.
A.
Green plants
B.
Decomposers
C.
Predators
D.
Herbivores
Answers
The minerals diamond and quartz can both be colorless. However, diamond will scratch quartz, while quartz will not scratch diamond. This is because each has a different _______.
A.
streak color
B.
hardness
C.
breakage pattern
D.
crystal structure
Answers
Answer:
B
Explanation:
Diamond is the highest on the hardness scale, while quartz is lower, only a diamond can scratch a diamond
Answer:
diamond is harder than quartz so that would be b hardness.
What type of consumer is the hawk
Answers
A hawk is a primary consumer
Explanation:
Hawk are secondary or tertiary consumers in a food chain. This means that they eat primary and other secondary consumers.
Hope this helps..
Describe the location of the kneecap to the knee joint
Answers
Answer:
superior
Explanation:
stress at a divergent plate boundary
Answers
Tensional stress happens at these plate boundaries when the plates are moving away from each other. Is this the answer you were looking for?
Answer:
tensional
Explanation:
A type of cellular transport is shown. Which description best identifies this type of cellular transport? Your answer: Osmosis, because energy is being used to move molecules with the concentration gradient. Active transport, because energy is being used to move molecules against the concentration gradient. Facilitated diffusion, because energy is being used to move molecules with the concentration gradient
Answers
Answer:
Active transport, because energy is being used to move molecules against the concentration gradient.
Explanation:
This picture shows active transport. That just means that energy is being used (in this case, ATP) to move molecules against their gradient (meaning, from low to high concentration). Molecules "naturally" diffuse from high-->low concentration, so to move in the opposite direction requires energy input. You can tell this because there are only 2 molecules on the top side of the membrane, but on the bottom side there are 13.
Why not A: This is not necessarily water, as in osmosis, and it's not going with the gradient.
Why not C: This is not facilitated diffusion, because molecules are going against, not with, their concentration gradient.
The description that best identifies this type of cellular transport is: Active transport, because energy is being used to move molecules against the concentration gradient.
WHAT IS ACTIVE TRANSPORT:Active transport is a type of transport that requires the input of energy in form of ATP. This is because the movement of molecules is against a concentration gradient. According to the diagram in this question, molecules are being moved into the cell with an input of ATP (energy).Therefore, the description that best identifies this type of cellular transport is: Active transport, because energy is being used to move molecules against the concentration gradient.
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A piece of string 1 cm long is longer than a piece of string 10 mm long
O True
False
Answers
A piece of string 1 cm long is longer than a piece of string 10 mm long in terms of unit of length measurement. The statement is true.
What are the unit of length measurement ?
It is an act of measuring the length of objects with some specific units and it can be standard or non-standard.
Some measuring tools like a ruler, measuring tape are used to measure the length.
The height of students can be measured using a feet scale. Some of the units of length are inches, centimeters, meters, feet, etc
Steps followed to measure length are In step 1, the unit will be chosen to measure length, in Step 2 the object will be placed beside the ruler starting from point 0 on it.
In Step 3 endpoint will be marked by value.
The units of length measurement are two types such as Standard and non-standard units of measuring length.
The statement is true.
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1.Explain the kingdom of protozoa and fungi
note that they are different kingdom
2.Explain the difference of bacteria and virus
Answers
Answer:
Explanation:
Kingdom Protozoa, as defined in this scheme, does not form a natural group or clade, but a paraphyletic group or evolutionary grade, within which the members of Fungi, Animalia and Chromista are thought to have evolved.
Which occurs when the body response to the environment by maintaining a stable internal environment despite changing external conditions
Answers
Answer:
homeostasis
Explanation:
Responding to the environment by maintaining a stable internal environment despite changing external conditions is characteristic of living things. The maintain of stable internal environment called homeostasis. Other characteristics of living things are: the possibility to produce, one or more cells, the possibility to grow and develop...
i hope i answered your question!
thanks,
Michael
HELPPPP
can someone tell me 2 producers, 2 primary consumers, 2 secondary consumers, 2 tertiary consumers and 2 quaternary consumers in a freshwater lake.
Answers
Answer:
hope it helped
Explanation:
2 producers are bacteria and algae
2 primary consumers are microscopic zooplankton and snails
2 secondary consumers are fish and stonefly
2 tertiary consumers are eels and trouts
2 quaternary consumers are some very large birds like the eagle and other big fishes like shark or reptiles like crocodiles and so on
Answer:
2 producers are bacteria and algae
2 primary consumers are microscopic zooplankton and snails
2 secondary consumers are fish and stonefly
2 tertiary consumers are eels and trouts
2 quaternary consumers are some very large birds like the eagle and other big fishes like shark or reptiles like crocodiles and so on
Vaccines have been subjected to quite a bit of controversy in recent years. Currently, the Centers for Disease Control and Prevention (CDC) recommend that healthy people receive a flu vaccine every year. What are your current perceptions of the flu vaccine? Do you think these recommendations are appropriate? Explain your reasoning.
Answers
Answer:
There are many reasons to get an influenza (flu) vaccine each year.
Flu vaccination can keep you from getting sick with flu.
Flu vaccination can reduce the risk of flu-associated hospitalization for children, working age adults, and older adults.
Flu vaccination is an important preventive tool for people with chronic health conditions.
Flu vaccination helps protect women during and after pregnancy.
Flu vaccine can be life-saving in children.
Flu vaccination has been shown in several studies to reduce severity of illness in people who get vaccinated but still get sick.
Getting vaccinated yourself may also protect people around you, including those who are more vulnerable to serious flu illness, like babies and young children, older people, and people with certain chronic health conditions.
Explanation:
Influenza is a potentially serious disease that can lead to hospitalization and sometimes even death. Every flu season is different, and influenza infection can affect people differently, but millions of people get flu every year, hundreds of thousands of people are hospitalized and thousands to tens of thousands of people die from flu-related causes every year. An annual seasonal flu vaccine is the best way to help protect against flu. Vaccination has been shown to have many benefits including reducing the risk of flu illnesses, hospitalizations and even the risk of flu-related death in children.
Flu vaccines helps to reduce the risk of flu-associated illness. And the recommendations made by CDC that healthy people receive a flu vaccine every year is appropriate.
What is flu?"Also called influenza is a viral infection which can be deadly in high risk groups."Flu symptoms include- fever, cough, cold, fatigue, headaches and muscle pain.It causes asthma, pneumonia and chronic diseases.What is flu vaccines?"These are the vaccines that protect against infection by influenza viruses."What is CDC?"It is the National public health agency of the United States."Hence, in order to reduce the disease caused by flu, it is recommended to receive a vaccine.
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Why did Owens and Darwins have quarrels and stopped being friends
Answers
Answer:
Explanation:
probably because they misunderstood eachother
and they can't stand each other again
Which are limiting nutrients for plant growth?
Answers
Answer:
Macro nutrients that commonly act as limits on plant growth, Nitrogen, Phosphorous,and Potassium. Hope this helps out.
Explanation:
Answer:
phosphorus and nitrogen
Explanation:
edge
Raising more sustainable fish would require choosing fish species such as____?
A. Tilapia that eat algae and plants
B. Tuna that eat other fish
C. Catfish that eat fishmeal
D. Carp that eat fertilizer
E. Trout that can be easily caught
Answers
Answer:
A tilapia that eat algae and plants
Select the correct answer.
A lichen is an organism that structurally appears to be a single organism. But a lichen is actually two different organisms—a fungus and green
algae-living together as one organism. The fungal partner derives its nutrition from the photosynthesizing algae. How does a lichen differ in its
photosynthetic activity from Elysia chlorotica, the sea slug that's considered to be a photosynthesizing animal?
CA In lichens, the fungi photosynthesize on their own, while Elysia chlorotica forms a relationship with a photosynthesizing plant.
B. In lichens, the relationship with the algae lasts throughout the life cycle, but in Elysia chlorotica, the relationship occurs only
during the immature juvenile stage of the slugs life cycle.
OC Lichens can photosynthesize only because of the living algal partner, while Elysia chlorotica incorporates chloroplasts from
algae into its cells.
D. In lichens, the association between the fungi and algae is permanent, while Elysia chlorotica associates with a
photosynthesizing organism only when it requires food.
Answers
Answer:
The correct answer is option C. Lichens can photosynthesize only because of the living algal partner, while Elysia chlorotica incorporates chloroplasts from algae into its cells.
Explanation:
Elysia chlorotica is an animal of the mollusk member that is known as the animal that can make its own food in unfavorable conditions. Elysia chlorotica search out plants and they eat them. They assuredly don't photosynthesize n its own.
They take the mechanism that permits plants to collect sunlight based vitality. The slugs take up these smaller than normal machines, called chloroplasts, into their skin, which turns them emerald green. While Lichens can photosynthesize only due to the living partner algae that can photosynthesize for both.
Answer: B.
Explanation:
The correct answer is option C. Lichens can photosynthesize only because of the living algal partner, while Elysia chlorotica incorporates chloroplasts from algae into its cells.
Explanation:
Elysia chlorotica is an animal of the mollusk member that is known as the animal that can make its own food in unfavorable conditions. Elysia chlorotica search out plants and they eat them. They assuredly don't photosynthesize n its own.
They take the mechanism that permits plants to collect sunlight based vitality. The slugs take up these smaller than normal machines, called chloroplasts, into their skin, which turns them emerald green. While Lichens can photosynthesize only due to the living partner algae that can photosynthesize for both.
Why is an overabundance of nutrients harmful to a water supply?
A.
It decreases the number and types of aquatic plants.
B.
It kills all aquatic plants.
C.
It sterilizes water.
D.
It causes excessive aquatic plant growth.
Answers
Answer:
d
Explanation:
It leads to a process called as eutrophication in which the aquatic plants grow regularly over the water surface and the living beings living inside the water gets diminished because of the lack of nutrients and the various substances required for the growth.
What is water sterilization ?It is the process in which the harmful substances and contaminants are removed outside the water source such that the water can be removed out from water resources such that they can be made appropriate for drinking.
An overabundance of various nutrient primarily nitrogen along with phosphorus in water begins a process known as eutrophication. The process hammers the growth of other lives present on the sources.
Algae feed on nutrients, growing, spreading and turning out the water green. Algae blooms smells bad, blocks sunlight and even releases out chemicals in certain cases.
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Which of the following is an intrusive igneous body?
O A. Stock
O B. Stope
O c. Magma Chamber
O D. Aphanite
Answers
Answer:
D. Aphanite
Explanation:
A.P.E.X
An invasive igneous body is aphanite. Thus, the correct option is D.
What are Aphanite rocks?
Aphanite's are igneous rocks that were formed by rapid cooling in a volcanic or hypabyssal setting and are so finely grained that their individual mineral crystals cannot be seen with the unaided eye.
Very fine-grained, crystalline fabrics called aphanitic minerals are created when a magma solidifies in reaction to an exceptionally rapid loss of heat and dissolved gases. They are characterized by grains that are too small to be recognized without a petrological microscope.
Large crystals are known to be present in certain specific igneous rocks. The crystals in this type of rock are approximately the same size. Compared to aphanitic rock, which is known to have rocks with finer grain sizes.
So, the correct option is D.
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Match the type of rock with how it forms.
Igneous
?
Released in volcanic
eruptions
Metamorphic
Can form from erosion
?
Sedimentary
?
Form because of high heat
and pressure
Answers
Metamorphic- made from heat and pressure changing the igneous, sedimentary or metamorphic parent rock (3rd one)
Sedimentary- From weathering, erosion, deposition, compaction and cementation (2nd one)
The matching of type of rocks with respect to their formation is described as follows:
Igneous rock: released in volcanic eruptions. Metamorphic rock: formed because of high heat and pressure.Sedimentary rock: formed from weathering, erosion, deposition, compaction, and cementation. What is a Rock?A rock may be defined as the solid mineral material forming part of the surface of the earth and is deposited under the earth surface.
Therefore, the matching of types of rocks with respect to their formation is briefly mentioned above.
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What happens when new data call current scientific explanations into
question?
A. Scientists repeat the experiments to prove that the new data are
unreliable.
B. Scientists repeat the experiments to verify results and reevaluate
scientific explanations.
C. Previous explanations are thrown out immediately.
D. Scientists ignore the new data because the findings are clearly
false.
Answers
Answer:
B. Scientists repeat the experiments to verify results and reevaluate
scientific explanations.
Explanation:
This is kind of process of elimination. Scientists don't move onto new ideas with out proof so C it out. They wouldn't just ignore new data so it's not D. Between A and B, B seems most likely because when scientists look into new data they wouldn't necessarily have the mindset of trying to prove that it is unreliable. They just want to confirm and learn.
I know this is late for an answer but I wanted to provide one anyway. :)
The birds shown above have beaks with three different shapes and sizes. These genetic variations in the beak each appeared initially due to
Answers
Answer:
mutations
on edge
It was Charles Darwin who called the birds seen on the Galapagos islands as the finches. These birds show a remarkable diversification in their beak based on their chief food.
What are Darwin's Finches?Charles Darwin observed a group of small sparrow like black birds with strong, short beaks which are known today as Darwin's finches. These finches varied on different islands, but they were closely related to one another.
These finches evolved from a common ancestors to have different beaks well suited for different types of food they feed on. Generally long and pointed beaks are suitable for seed and cactus feeders. Even some short beaked finches tear up the base of the cactus and feed on its pulp.
The slender and sharp beaks are common in insect eating finches. The process by which they successfully evolved and radiated to different habitats is called the adaptive radiation.
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Your question is incomplete most probably your full question was:
Some birds have beaks with three different shapes and sizes. These genetic variations is the result of which theory?
What would happen if a tiger switched habitats?
Answers
Answer:
It could possibly go instinct or they could show issues and carry diseases
Explanation:
