Which statement is true about mutations? W
A. Mutations are always beneficial.
В.
Mutations are always harmful in plants.
C.
Mutations only affect humans.
D.
Mutations can be caused by high-energy radiation.

Ascientist publishes a paper that states the changes in the levels of gases in the atmosphere of a moon of saturn indicate that there may be terrestrial life on the moon. which statement correctly answers whether the question of alien life on this moon is scientific?