Question

name
date
topic test
use the word bank to fill in the blanks.
behavior • communicate • stimulus • respond

1. animals react to their environments when they receive a ____________. the brain receives this signal, interprets it, and tells the body how to

Explanation:

In the context of animal behavior and responses to the environment, a "stimulus" is a signal or event that triggers a reaction. The sentence describes animals reacting when they receive such a trigger, so "stimulus" fits the blank as it's the input that causes the brain to interpret and direct a response.

Answer:

stimulus