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.

[EX Q]: Question: What code is the same in all living things and shows that all organisms are related by descent from a common ancestor? Answer: genetic
[EX A]: The genetic code is the same in all living things. This shows that all organisms are related by descent from a common ancestor.

[EX Q]: Question: What do you call the electrons in the outermost energy level of an atom? Answer: valence electrons
[EX A]: Electrons in the outermost energy level of an atom are called valence electrons. They determine many of the properties of an atom, including how reactive it is.

[EX Q]: Question: What is the vector sum of all the torques acting on the object called? Answer: net torque
[EX A]:
The net torque is the vector sum of all the torques acting on the object. When adding torques it is necessary to subtract CW from CCW torques.