How many objective lenses are there, How many total lenses are there in a microscope, and How many adjustment knobs are used to magnify an object? (compound microscope)

3 or 4 objective lenses

2 total lenses

2 adjustment knobs (coarse and fine)

Explanation:

I hope this helps you

the answer is c on e2020, bud.

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms