You are given a science question (easy-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]: Solar radiation provides more heat near the equator than near the poles on Earth. The greatest amount of heat is moved away from the equator by  
 (A) ocean currents. (B) aquatic plants. (C) surface winds. (D) tectonic plates.
[A]: A


[Q]: Which is a response of the autonomic nervous system that helps maintain equilibrium in the body?  
 (A) shivering in cold temperatures (B) eating due to appetite (C) slapping at biting insects (D) pulling away from hot objects
[A]: A


[Q]: The living systems of plants and animals are constantly taking in water to continue the processes of life. What eventually happens to most of that water?  
 (A) It is converted into hydrogen and oxygen. (B) It is returned to the environment. (C) It is broken down by bacterial decay. (D) It is permanently combined with other compounds.
[A]:
B