Which compartments make up the cardiovascular system

Which would be an adaptation in a rainforest, but not in a tundra? a. ability to store water for a long time b. fur that blends in with snow c. strong claws for killing prey d. a beak that can dig into thick trees

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

Identify the composition of oceanic and continental crystal rocks. in a model of earth’s interior, where would these rocks appear?