Depending on the body part, in quite a few ways... you have to have body partsto survive.
teeth,claws,andfur
its long neck
their camo coats
A Macaw has a special body part?
camouflage helps rabbits survive by blending into their surroundings.
A person's body needs vitamins to survive. The organs and different parts of the body needs vitamins to stay healthy and remain healthy.
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All body parts allow a rattlesnake live in its habitat. Remove any body part and the snake will not survive.
They have brilliant hearing which warns them about dangers
It helps them survive because they can see when predators are coming and run away
Because they they can survive heat and their body parts help them to protect against heat.
To answer a question we need a who, what, where, when, how. Your question lacks a who so we can’t answer.