BIOLOGY MIDDLE SCHOOL

Freeze-thaw is an example of this.A. physical weathering
B. chemical weathering
C. biological weathering
D.all of these

Answers

Answer 1
Answer:

A

This is because it freeze-thaw causes the rock to break down, mechanically.

Explanation:

When water precipitates, it enters the crevices of the rocks. When the water temperatures go below 4 degrees and even turn to ice, the water expands. This causes the supercooled water/ice to push against the walls of the crevices putting great stress on the rock hence increasing the size of the crevices. When water temperature rises the water contracts and stops putting stress on the rock also because it will be occupying less space in the crevices (partly because the crevice has also increased in size from the initial stress). When the crevice again fills with water (and note that this time it will fill with more water because the crevice is bigger), and the water cools to ice, it expands and puts stress, again, on the crevice growing it even larger. When this freeze-thaw continues over time, it ultimately will lead to the rock splitting apart along the crevice.

Learn More:

Learn more about rock weathering;

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Answer 2
Answer:

Answer:

physical weathering

Explanation:

:)

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Answers

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Can someone please help me with question 1

Answers

Graduating from high school this year makes me feel a bit sad. Biology was such a fun but crazy class.

Enough of my sentiments; I'm here to help, :-).

This answer is dependent upon what ecosystem you choose your project over.

So, abiotic factors are nonliving things in an ecosystem. Biotic factors are living organisms and anything alive.

For instance, if you choose a pond for your ecosystem then the water, soil, maybe trash would be abiotic factors. Some could argue there is living material within the water and soil but those abiotic factors are not alive. I mean water is not alive but it could be a home to biotic factors like microorganisms such as protozoans and worms. The grass and trees and animals around a pond would be biotic factors.

Hope you get the idea. if there's any questions then leave a comment and I'll help. Good luck!
my answer is the same as her (SORRY) ( I need some points to ask my question)

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Answers

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Answers

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