Mammals that live in the arctic ocean have a large amount of blubber, which is a fatty tissue just beneath the skin.

which statement best relates why these animals have so much blubber?
lipids in blubber insulate the animals from cold water.
proteins in blubber the animals move to stay warm.
carbohydrates in blubber provide all the energy that the animals need to stay warm.
nucleic acids build the lipids in blubber, which keep animals warm by regulating cell activities.

Which statement best relates why these animals have so much blubber?

A. Lipids in blubber insulate the animals from cold water.

Explanation: A on edge

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.