Please help me with answer

Answer:The Great Oxygenation Event, which occurred around 2.45 billion years ago, was probably the first major extinction event. Since the Cambrian explosion, five further major mass extinctions have significantly exceeded the background extinction rate.

Explanation:

got this from the internet very helpful :)

Select the correct words to complete the following statement.

The processes responsible for changing sediments into sedimentary rock are ________ and _________.

a
Heat and pressure
b
Rain and weathering
c
Compaction and cementation
d
Erosion and runnoff

Pls help me with this!! (Yea and I know this isnt biology but they didnt have the subject for this)
Now I know that stress changes Earth's crust by changing the_______

What happens to the radiation that is soaked up by the atmosphere and Earth's surfaces?

A.It changes into UV and greenhouse gases send it back to Earth.

B.It changes into IR and greenhouse gases send it back down to heat Earth.

C.It changes into greenhouse gases and gets released into space.

D.All the IR escapes into space.

Which body system or systems are affected by diabetes? (highlight all that apply)
digestive
respiratory
circulatory

Which molecules are affected by diabetes? (highlight all that apply)
oxygen
glucose
amino acids

MYTH
Tigers and Goldfish are not related.

FACT

Evidence #1

Evidence #2

__________ allows the skin to bend without tearing apart.
a.
collagen.
c.
epidermis.
b.
nerve ending.
d.
none of the above.

A researcher attempts to use a segment of ribosomal RNA as a molecular clock to calculate the date of the last common ancestor of two species. He finds that the two species diverged from a common ancestor 150 million years ago. These particular species have abundant fossil records that strongly suggest that these species diverged 100 million years ago. Which of the following answer choices best describes a reason for the discrepancy in the date of the last common ancestor of these species?

A. Ribosomal RNA is not a reliable molecular clock and should not be used for dating.
B. The neutral mutation rate used in calculating the last common ancestor date may not have been accurate.
C. It is highly likely that the two organisms did not share a common ancestor, so the results are invalid.
D. A large portion of the ribosomal RNA is not vital to survival, so it is not likely to be well preserved.

Explain how the brain regulates metabolism.

A class is learning about the evaporation step in the water cycle using a simple model. The model consists of a 1-L container of water. When the container is open, and it receives sunlight, the water can freely evaporate from the container. The students design an experiment using the model. In the experiment, the container will be filled and left open outside from dawn until dusk at different times of the year. The students will run the experiment only on days with clear weather. As a basis of their experiment, the students make an assumption that more water will evaporate from their model when more solar energy is present. Which of the following is a result that the students could predict in order to test their assumption?
A.
Equal amounts of the water will evaporate on summer days and winter days.
B.
Less of the water will remain in the container after one day in summer than after one day in winter.
C.
Less of the water will remain in the container after one day in winter than after one day in summer.
D.
Some of the water will evaporate on winter days but not on summer days.

How are meiosis and mitosis different?

A: In mitosis, when the two sets of genetic material separate, each daughter cell receives one complete set of chromosomes.

B: In meiosis, the chromosome number is reduced by half.

C: Mitosis is a form of asexual reproduction, whereas meiosis is an early step in sexual reproduction

D:All of these are correct.
I think the answer is D. Is that correct?

Highly organized systems like living cells should have _____.

a. High energy

b. High entropy

c. Low entropy

d. Low energy

which characteristics is used to categorized the different type of animal like protists A: type of reproduction B: method of movement C: method of digesting cells D: number of cells
i need some help! thank youu

can someone help me again ik it easy but i dont understand

how are osmosis and facilitated diffusion alike?

Please help me

How to convert time on a 24 hour clock ?

HELP ASAP!!! In what way are moss and fern reproduction the same? (1 point)



Both spend the majority of their time in the gametophyte stage.


Both spend most of their time in the sporophyte stage.


Both need water for the gametes to unite.


Both need wind for the gametes to unite.

Use the diagram below to identify letter A.

Write a short paragraph to describe viscosity. Include at least two examples of fluids and the words “flow,” “fluid,” “particles,” and “viscosity.”

Give one example of a question that science could test. Then, explain in your own words why it is an example of a scientific question.

ASAP give me something!!!!!

Required The measure of the average thermal energy of a substance is * O heat O matter O temperature​

Please help
Begin by selecting a freshwater or marine aquatic ecosystem as a model for your food web be specific choose a specific like or if you choose an ocean ecosystem identify its geographical area and Depth

How are the Gulf Stream and the Kuroshio Current similar? ( science)

They both begin in Southeast Asia.

They both go to Western Europe.

They are both cold-water currents.

They both begin at the equator.

Jacob is studying cell organelles. He knows that light energy drives photosynthesis. Look closely at the diagram below.



What conclusion can Jacob make when he compares the function of chloroplasts and mitochondria in plant cells?


a
A- Plant cells have a membrane surrounding the nucleus. Animal cells do not.

B- Animal cells contain mitochondria. Plant cells do not.

C- Plant cells are surrounded by a cell wall. Animal cells are not.

D- Animal cells contain chloroplasts. Plant cells do not.

Is glucose, C6 H12 O6, an organic or inorganic compound? How can you tell?

please answer the questions below

How do i solve this?

1. What are the three components of the skeletal system?
2. List four functions of the skeletal system.
3. Name and describe the two types of tissue that make up a bone.

where did the name '' hamster'' probably come from?
A. The animal was discovered by a person named Hamm.
B. People thought the animals looked like little hams.
C. It comes from a word meaning ''tiny''.
D. It comes from a word meaning ''to hoard''.

The science club at Tracy's school is researching how temperature affects fish reproduction. They conducted a study to find out if raising the water temperature would decrease the number of bass eggs that hatched.

They gathered bass eggs from a local lake. Half of the aquariums were kept at room temerpature, and the other half were placed in a sunny window.

What is the independent (test) variable from this experiment?


The size of the lake.


The number of bass eggs that hatch.


The temperature of the water.


The number of aquariums.

is it
A.True
B. False