A small number of elephants are born without tusks. Humans have been poaching (illegally hunting) elephants for their tusks for decades. We are now starting to see a much higher percentage of elephants being
born without tusks than normal. Is this natural or artificial selection? Why?

oxidation

explanation:

answer

i think that the best answer would be c.

tell me if im wrong : )

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)