Arrector pili are responsible for fingerprints true or false

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

Someone me with this: a mineral' is determined by its actomic structure.

Explain how sequences of amino acids in proteins can be used to reveal relationships among organisms.