Two abiotic factors of a habitat could include a) birds and bees. b) snails and snowfall. c) mosquitoes and mushrooms. d) clouds and the air.

D) Clouds and the air.
An abiotic factor is nonliving and all of them stated a living factor(biotic)

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