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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?
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.
Because they they can survive heat and their body parts help them to protect against heat.
All of them. All of an animal's organs and external features have a purpose that help keep the organism alive.
wide hind flipper,two side flippers,mouth,fur.
You body strategically places and removes fat from parts of your body based on what will help you survive (this goes back to when humans were hunters/gathers and didn't have a steady stream of meals). As you gain fat, your body places it where it will help protect you the most, and as you lose fat it keeps it where it will help protect you the most.