The answer is:
Because they are likely to change more than one animo acid
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Make sure its CORRECT!
A.
Endangered species is closer to extinction
Threatened ones are closer to becoming endangered
Because they have power to move.
I agree completely. one hundred percent
renewable products are better because we do not have to kill plants for mass products and it is harmful if trashed in a habitat because it can poison waters kill wildlife that drink from it swim from it