Some researchers have proposed that the human population was reduced to fewer than 10,000 individuals as a result of a catastrophic event that occurred about 50,000 years ago, and that all modern humans are descendants of this small population. if this proposal is true, it would be an example of

i also need this answer for on a project, does anyone know the answer? ?

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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