Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Input: Consider Input: Radioactivity is the release of particles and/or energy from the nucleus of an atom.

Output: What is the release of particles and/or energy from the nucleus of an atom described as?


Input: Consider Input: Circannual behavioral rhythms are linked to the yearly cycle of seasons.

Output: What type of behavioral rhythms are linked to the yearly cycle of seasons?


Input: Consider Input: Natural selection evolutionary process has adapted protonephridia to different tasks in different environments.
Output: What evolutionary process has adapted protonephridia to different tasks in different environments?