5. Think Critically Suppose you are pulling a wagon with
the handle at an angle. How can you make your task
easier?

If you're pulling something with a handle at an angle, part of the force you are exerting is up or down on the handle. So, you would want to have the handle be as close as possible to the angle you're pulling it in (parallel with the ground) to have maximum force pulling the load.

Explanation:

hope this helps!

i think the answer would d

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.