Which factor is most responsible for the change in the deer population seen during the duration of the study?

The answer to this will be from your lab notes/procedure. it would be best to ask another student who participated in the lab as we do not know what was done, what enzyme or if the temperature is celsius or fahrenheit. if i were to guess though i'd say the rate stopped due to enzyme denturing at high temperature

The name of the instrument that the scientist uses is called a microscope.a microscope is used to view objects which is not visible to the naked eyes

It's either -limiting factors or -scarce resources but i'd go with my first answer since the food and water are abundant they really aren't scarce