Polar bears are adapted to stay warm by growing thick fur. These organisms most likely live in a a tropical rainforest b temperate rain forest c desert d tundra

d. tundra

Explanation:

Polar bears are present only in the Arctic tundra biome. The most important areas for polar bears in the arctic are are the edges of pack ice where the wind and water interact, which createsa constant refreezing and melting network of leads (open spaces in the sea ice) and ice patches.  

A polar bear has a fat layer under the skin that helps it stay warm and the big paws help a polar bear walk through the snow.

Hence, the correct option is D. Tundra.

the glands which are associated with each description is given below:

answer: zinc is the substance which has a volume of 1.38 .

density is defined as the mass of an object per unit volume.

it can be calculated by dividing mass of a substance by its volume i.e.

si unit of density is kg per cubic meter and cgs unit of the same is gram per cubic centimeter.

now from the given data volume can be calculated by the formula .

hence, the volume of aluminium will be = which comes out to be 1.703 .

similarly, volume of zinc, chromium, and nickel will be 1.378 , 0.869 , and 0.356 respectively.