You are given a science question (hard-level) and four answer options (associated with "A", "B", "C", "D"). Your task is to find the correct answer based on scientific facts, knowledge, and reasoning. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D'. There is only one correct answer for each question.

Q: Where does evaporation occur at the HIGHEST rate?  
 (A) rivers (B) streams (C) estuaries (D) glaciers

A: C
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Q: Which factor would most likely limit the number of mice living in an area?  
 (A) plentiful resources (B) stable climate (C) more predators (D) less competition

A: C
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Q: Removing the coal from Earth's crust can change the structure of the crust, release methane gas, and contaminate groundwater with heavy metals. Which of Earth's subsystems is most likely to be affected by all these consequences?  
 (A) atmosphere (B) biosphere (C) hydrosphere (D) lithosphere

A:
B
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