List Four of the Principal Chemical Elements Found in Living

question 44

Essay

List four of the principal chemical elements found in living organisms and identify an important biological function of each element.

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Definitions:

Nudibranch Mollusks

Colorful sea slugs known for their striking forms and colors, which have shed their shells during evolutionary development.

Tracheal Tubes

A system of branching air ducts within insects that spread across the body to facilitate the exchange of gases.

Body Surface

The outermost layer or covering of an organism's body, including the skin, fur, or scales, which serves as a protective barrier.

Nudibranch Mollusks

Colorful sea slugs found in marine environments, known for their striking forms and colors.