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: Many sports stadiums use grass, but some use fake grass called artificial turf. Artificial turf is made of fibers that look like real grass. In which way is this technology most likely beneficial?
(A) It uses less water. (B) It produces more heat. (C) It releases less moisture. (D) It absorbs more carbon dioxide.

A: A
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Q: Which is most likely a genetic adaptation of desert plants to survive the hot, dry climate conditions?
(A) thin bark (B) waxy leaves (C) leaves that remain all year (D) flowers that bloom all year

A: B
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Q: What is the main reason humans need nitrogen to survive?
(A) Nitrogen is used in respiration to generate energy. (B) Nitrogen is used in making the proteins in the body. (C) Nitrogen is used to help the body eliminate wastes. (D) Nitrogen is used by nerve cells to conduct impulses.

A:
B
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