Which protists are producers, can make their own food? how do you know ?

cuz he is really really short, assuming an unorthodox and inherently unlucky configuration of elevator buttons…

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.

: -)

a. by using fur or clothes to trap heat energy near the body