Which of the following separates layers of different density? a)incline b)halocline c)thermocline d)pycnocline

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.

: -)

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.