What kind of consumer is a penguin? secondary or tertiary?

i think they are secondary Consumers. The majority of articles says secondary so yeah

Secondary consumer

Explanation:

It usually consumes fishes, which are primary consumers.

answer; the above answer to the above statement is (true)

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.

: -)