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Why is clean water necessary for aquatic organisms?

Answer and explanation

Correct answer: It supports their life and reproduction

The direct answer is A: clean water supports the life and reproduction of aquatic organisms. Aquatic organisms live in or depend on water, so water quality affects their breathing, feeding, growth, movement and breeding. Clean water normally provides suitable oxygen, temperature and chemical conditions and allows food webs to function. Pollution may add poisonous substances, waste or excess nutrients; it can reduce oxygen and damage eggs, plants, fish and other organisms. Option A correctly connects clean water with survival and reproduction. Option B is wrong because clean water does not domesticate wild organisms; domestication is a human-controlled process over generations. Option C is wrong because clean water does not send aquatic animals to deserts. Option D is wrong because clean water helps maintain, rather than destroy, aquatic habitat. The word “necessary” does not mean every species needs identical water, but it does mean suitable, unpolluted water is essential. Memory cue: clean water means healthy aquatic habitat.

Related tags

Aquatic WildlifeClean WaterRiver Habitat

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