Which method of energy production requires no oxygen? A. photosynthesis
B. cellular respiration
C. Fermentation

c

Explanation:

This process, which is also known as fermentation, takes place in the cytoplasm and does not require oxygen.

i'd say that the moon rock is about 2.2 billion years old.

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.

: -)