Answer:
contractile vacuole
Explanation:
contractile vacuole is used for balance of water,salt etc
Answer:
We only know it's there because we can see the effect of its gravity. Scientists study dark matter by looking at the effects it has on visible objects. Scientists believe that dark matter may account for the unexplained motions of stars within galaxies. Computers play an important role in the search for dark matter information.
Explanation:
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He never liked being on the hot seat and he'd found his niche<span> with this job.</span><span>
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The doctor <span>suspected that this characteristic was the result of a</span> somatic mutation that happened in the developing embryo, but probably wouldn't affect the daughter's egg cells.
