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: Human evolution shows that evolutionary changes typically occur at what pace? Answer: slow
Usually evolutionary changes occur at a very slow pace. Human evolution took millions of years. However, sometimes evolution can also happen quite quickly.

Question: Diamond, graphite and fullerene are examples of what form of carbon? Answer: crystalline
Pure carbon can form different types of crystals. Crystalline forms of carbon include diamond, graphite, and fullerenes.

Question: Sound navigation and ranging is an acronym for what, which is used to locate underwater objects such as submarines? Answer: sonar
Sonar stands for sound navigation and ranging. It is used to locate underwater objects such as submarines.