Answer:
Tropical areas are warm and wet causing for animals to want to hide essentially. Also there is a lot of cover for animals to hide in. Usually in tropical areas there are a lot of predators also, another reason for animals to hide.
Neck. the neck connects to all parts of the body. cool the neck and everything else will be cooled down too
Mountain chains that are now separated by bodies of water on different continents would match up if these continents are placed next to each other, as they were when pangaea existed.
