Answer:
because harmful substances often chemicals or microorganisms contaminate a stream, river, lake, ocean, aquifer, or other body of water, degrading water quality and rendering it toxic to humans or the environment.
Explanation:
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Oh that's called an enbargo.
Answer:
Mercury and Venus are the two planets that have no moons. The other planets in the solar system have a combined total of 146 moons, with 27 more potential moons waiting for confirmation.
Explanation: