Definite article is used before a noun (person place or thing) to indicate that the identity of the noun is known to the reader.
indefinite article is used before a noun that is general or when its identity is not known.
Scavengers are meat eaters that eat dead animals
I do believe that it is C. crossing over :) I hope that is correct, it seems like the only plausible answer.
The correct order is:
1. Neutral
2. Harmful
3. Beneficial
Neutral mutations have no effect on organism and the majority of mutations are neutral
Harmful mutations (or deleterious) may cause genetic disorders and those mutation decreases the fitness of the organism.
Beneficial mutations (or advantageous) increases the fitness of the organism and may become more common through natural selection.
Te answer is the Arctic fox