Which phrase describes the role of the mitochondria?
a. where proteins are manufactured
b. where genetic material is housed
c. where cells control water content
d. the powerhouse of the cell

typically, most spiders possess eight eyes. however, others have as many as 12, and some don't have any. these eyes are for detecting light from dark, deciphering shapes and for gathering their prey.

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.

: -)

the correct answer is b