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: The frequency of a wave is the reciprocal of what other attribute of the wave? Answer: period
[EX A]: The period of a wave and its frequency are reciprocals of each other.

[EX Q]: Question: What occurs when two wave crests overlap? Answer: constructive interference
[EX A]: Constructive interference occurs when two wave crests overlap, doubling the wave amplitude at that location.

[EX Q]: Question: What do organisms need to speed up biochemical reactions? Answer: enzymes
[EX A]:
Enzymes are needed to speed up biochemical reactions in organisms. They work by lowering activation energy.