Have played a major role in altering earth's atmospheric composition over time. a. tsunamis b. volcanoes c. hurricanes d. earthquakes

B. Volcanoes

Volcanoes have a statistically higher impact on the earth's atmosphere when an eruption occurs. This is because of the gas accompanied by the blow of the magma. Changing the components of the atmosphere can alter the current conditions not only in the atmosphere as well as the lithosphere, the environment.

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