I’m not sure what your asking. But if you have 2 different alleles of a gene it will be heterozygous
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Answer:
-kills organisms such as fish, birds, and crabs
-disruption of food chains caused by the death of organisms
-destruction of ecosystems
As pollution and runoff get dumped into the ocean the acid levels go up causing acidification to happen. This harms animals, and us.
<u>Human activity</u>. The sixth mass extinction of of organisms caused by human actions potentially could go as far back as the late Pleistocene era (over 12,000 years ago.)