Which of these statements is correct about the theory of evolution? it is based on evidence obtained after several investigations. it is based on evidence which was gathered by historians in the past. it was accepted after evidences were proved non-testable. it was accepted after scientists proved that its results are non-observable.

After many different investigations, scientists obtained several shreds of evidence to support this theory.

Explanation:

It is supported by evidence from different scientific branches, such as genetics, geology, paleontology and developmental biology. Darwin's theory of evolution is the most accepted and substantiated theory in biological sciences. Darwin had no clue about genetics but his theory was purely based on evolutionary characters or traits.

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.

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