Question

Lungs and gills are structurally different, but perform like functions in vertebrates. Both lungs and gills

A) take up oxygen and release nitrogen as waste.
Eliminate
B) take up carbon dioxide and release oxygen as waste.
C) take up oxygen and release carbon dioxide as waste.
D) take up nitrogen and release carbon dioxide as waste.

Answer 1

i think it would most likly be B

Answer 2

I would say B because they dont really need oxygen so they dispose of it as waste