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

Input: Consider Input: Toxins is contained in the skin of brightly colored poison dart frogs.

Output: What is contained in the skin of brightly colored poison dart frogs?


Input: Consider Input: Diffraction is the phenomenon in which light and sound waves become circular at the point source of a barrier.

Output: What is the phenomenon in which light and sound waves become circular at the point source of a barrier?


Input: Consider Input: During the synthesis phase, dna replication occurs in the cell cycle.


Output: What phase does dna replication occur in the cell cycle?