Biomes that have suffered mainly from pollution have water that contains little or no what?\nOptions:\n- (A) Toxins\n- (B) CO 2\n- (C) liquid\n- (D) salt\n- (E) Lead\n- (F) Carbon\n- (G) Acids\n- (H) sulfur OK. Let's think hard:
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Freshwater biomes have water that contains little or no salt. Freshwater biomes have suffered mainly from pollution. Biomes that have suffered mainly from pollution have water that contains little or no salt.
So, the final answer is (D).
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