The correct answer is:
C) oxygen:carbon dioxide
During respiration, animals take in oxygen and release carbon dioxide as a waste gas.
During respiration, members of the animal kingdom use ______ and then release ______ as a waste gas.
A oxygen:hydrogenoxygen:hydrogen
B carbon dioxide:oxygencarbon dioxide:oxygen
C oxygen:carbon dioxideoxygen:carbon dioxide
D carbon dioxide:water vaporcarbon dioxide:water vapor
1 answer