How does the hydroelectric dam picture here impact the environment?

by releasing toxic chemicals in their emissions

by generating significant heat that artificially warms nearby water

by producing greenhouse gases

by blocking fish migration

By blocking fish migration

Explanation:

By releasing toxic chemicals in their emissions

 Hydroelectrics only emissions are usually, non harmful electromagnetic signals.

By generating Significant heat that artificially warms nearby water

  Possible, but they do not produce much significant heat

By producing greenhouse gases

   No, just no- its magnets that are water moved, no room for greenhouse gasses..

By blocking fish migration

It is a dam, blocking a river, with fish in it.

not the best question format lol but what i think might as scale color is controlled by a single gene with two alleles, the green allele and the yellow allele. when moths that are homozygous for green scales are mated with moths that are homozygous for yellow scales, 100% of the offspring have green scales.

did u get the answer? /? ? / me