The color may help it to blend in and avoid being eaten by predators and survive long enough to reproduce.
The central element for all living things is carbon, which is why you might often hear the phrase "carbon-based" lifeforms. Another term is often "organic matter"
31. Carbon and hydrogen
32. Glycerol, fatty acid
33. Neighboring carbons, saturated
34. Carbon atoms, unsaturated
Didn't get 35
Shoulder Joint is the answer