Diabetes mellitus is a chronic disease that is caused by deficient activity of the islets of Langerhans. The islets of Langerhans is a part of the pancreas that secrets the hormone insulin, a hormone that functions to allow the utilization of glucose by the body, and therefore maintaining the glucose levels from getting too high. Diabetes mellitus is as a result of the inactivity of the insulin hormone and therefore there will be a high level of glucose in the blood.
the answer you're looking for is OVERPOPULATION. Overpopulation is when the carrying capacity of the land is exceeded. I hope this answer helps u out on your test and have a great day.
TEMPERATURE: Although enzymes are also affected by the pH and the concentration of the enzyme and substrate in their environment, this specific example shows that enzymes are affected by temperature.