What are other methods are used to maintain body temperature

answer///(c) the maximum number of organisms an environment can support for a long time; i believe this is correct, plz check luck;

increases the risk of extinction 

explanation:

the answer is that if the species suffers from the disease, there is nothing stronger than the others, so it is possible to remove wholeness. an example of this is hunger in irish potatoes, which has a deadly disease bearish part of all potato harvest masses. pretty much ruins the land of crops.