Responding to the environment is a characteristic of life best shown by which example?
O
O
O
a human shivers on a cold day
a horse trots in a field
a dog swims in a pond
a cat licks its paws

try a human shivers on a cold day that should be correct.

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.

: -)

i think the answer would be d