9
QuizMultiple Choice

Unit Test — Unit test

Question 9 • OK-Environmental Science A

Which of the following best describes the interaction between Earth’s crust and living organisms?

Answer
A
Raw materials essential for life are cycled through Earth’s crust.
B
Fossil fuels are a valuable energy source for the biosphere.
C
The continental crust allowed the evolution of life on land.
D
The crust recycles the organic materials in sedimentary rock.

Explanation

Earth’s crust stores and releases materials organisms need, such as phosphorus and minerals. Weathering moves these materials into soil and water, where living things can use them, and they cycle back through Earth systems. So the best description is that raw materials essential for life are cycled through Earth’s crust.

AI-written and checked against the verified answer.

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