5. a change in an organism's environment that causes the organism to
react is called a(n)

[34 points awarded to the best answer, use facts and/or data] 1.) what's the likelihood of thunderstorms occurring in the state of maryland? {this question is for a project for science, use facts and/or data and explain why . 34 points to the best answer]

The part of the eye that closes and opens to let light in is .

Which if the following best describes why invertebrates isn’t considered a scientifically valid word when classifying animals