Answer:
The skin has 4 main layers, Epedermis, Derma, Hypodermis, and the Subcutaneous layer. Each layer is composed of certain material and tissue. On the most outer layer, there is hair, nerves, and glands (of sweat). Down further are veins, and arteries. The adipose tissue makes up the hypodermis layer.
The fish moves up the river to spawn, a walrus stays warm in the cold ocean are the results of an organism having lipid in its body.
Explanation:
The fish have energy deposited in the form of fat or lipids, they do not feed during spawning and gets energy from the fats.
A walrus has good insulation of fat layer over their bodies as they live in the arctic region. The thick layer of lipid/ fat helps it to survive in freezing temperatures.
