One way bacteria are important to the earth and its ecosystems is that a. bacteria concentrate valuable minerals. b. bacteria decompose dead organisms. c. bacteria produce acetone. d. bacteria use oxygen.

anti-human ngf stable cell line (fulranumab) can be provided from creative biolabs.

explanation:

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.

: -)