Options:
[I] layer of body fat under skin
[II] A compound that donates proton
[III] Molecular kinetic energy
[IV] mineral particles and organics
[V] a complete digestive system
[VI] converting food to energy
[VII] keeping food fresh for long periods of time
[VIII] Something made primarily of oxygen and nitrogen
Q: Fact 1: An animal requires air for survival. Fact 2: Air is primarily oxygen and nitrogen. Given the two facts above, what does an animal require for survival?
A:
[VIII]