Three things that an astronomer can learn about a star by studying its spectrum.

Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment

{answer found. it's (3 ) }which statement describes the cell cycle? (1)the cell cycle is a process in which one cell divides into four genetically different cells. (2)the cell cycle is a process in which one cell divides into two genetically different cells. (3)the cell cycle is a process in which one cell divides into two genetically identical cells. (4)the cell cycle is a process in which one cell divides into four genetically identical cells.

Which hormone is used by both males and female?