I believe it is Primates.
The troposphere is shallowest or narrowest at the poles, and deepest or thickest at the equator. At the geographic North and South Poles, the troposphere reaches only 4 miles high, while at the equator, it extends nearly 12 miles high.
False. They form a V formation so that it will lower their heart rate and make it easier to go longer distances. And when they are in a V formation, it results in wind resistance.
False. I don't know how to explain it but they don't classify as living.
Answer:
I believe it is cellulose, I'm not a 100% sure