What is the function of the nervous system?

To collect information in form of sensory input from environment and body and then interpret and process these information inputs and responds on it.

Explanation:

Everything that body does is somehow connected to nervous system heartbeat, breathing, running and so on. It also controls memories and senses. Nerves send messages through nerve cells called neurons. Neurotransmitters are chemicals connects neurons and that moves through synapses to next until message reach to the right place. Messages can move faster than 200 hours per miles.

which

what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements