Justin notices a particular type of caterpillar feeds only on cottonwood trees in his neighborhood. in which way has justin increased his scientific knowledge? a. he has made observations about the natural world. b. he has used technology. c. he has performed a practical experiment. d. he has performed an unethical experiment.

A. He has made observations about the natural world.

Explanation:

This is the way in which Justin has increased his scientific knowledge. Justin has performed one of the steps of the scientific method, which is observation. He has taken a look at the natural world and learned something new about how it operates. This is a very important skill if Justin wants to become a better scientist.

answer; i believe the above is (false)

d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer