They must have a list of biomes there. When they say which one is endangered they mean which one is likely to no longer exsist after an amount of time.
Answer:
a
Explanation:
because I have had this question
Mutations. Definition. A Mutation occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene. A Mutagen is an agent of substance that can bring about a permanent alteration to the physical composition of a DNA gene such that the genetic message is changed.
B
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