Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.

Question: The fight or flight response and similar responses are controlled by what part of the nervous system? Answer: autonomous
Image copyright CREATISTA, 2014. The autonomous nervous system controls responses such as fight or flight . Used under license from Shutterstock. com.

Question: What composition determines both eruption type and volcano type? Answer: magma
Magma composition determines both eruption type and volcano type.

Question: In addition to five classes of fish, what other classes make up the species of vertebrates? Answer: amphibians, reptiles, birds, and mammals
There are about 50,000 living species of vertebrates. They are placed in nine classes: five classes of fish plus amphibians, reptiles, birds, and mammals.