Scientists study how the brain and nerves of an animal work together. What big idea of biology does this illustrate?

All cells share common traits that help scientists draw conclusions about the basic needs and functions of living organisms.

The human and the animal brain form a part of the central nervous system. The brain of both are made up of neurons and neuroglia. Its main function is to control thoughts and body movement. The brain of all the vertebrate animals is divided into forebrain, midbrain, cerebellum, hind brain, medulla oblongata and pons.

Explanation:

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carbohydrates are the body's preferred source of energy.

heat a spark and oxygen