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:

For the first blank, in the context of animal response to the environment, a "stimulus" is a signal that triggers a reaction. So the first blank should be "stimulus". For the second blank, after the brain interprets the stimulus, it tells the body how to "respond" (act in reaction to the stimulus).

Answer:

1. stimulus; respond