The protective covering on mammals, that helps them conserve body heat, is usually:\nOptions:\n- (A) spiny\n- (B) scaley\n- (C) elastic\n- (D) dense\n- (E) fuzzy\n- (F) skin\n- (G) spiky\n- (H) fat OK. Let's think hard:
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Mammals conserve body heat with their hair or fur. Mammals Hair or fur covers the bodies of most mammals. Mammals conserve body heat with their fuzzy, protective covering.
So, the final answer is (E).
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