2. What are some ways the stars in the photo could be grouped
or classified?

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.

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.