Where does most of the phosphorus come from in the phosphorus cycle?

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.

: -)

honestly, i believe it's a.true.

do i get brainliest? ?

am i right? ?