What is biological nitrogen fixation

{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.

If your blood becomes too concentrated with iona, what will happen to the red blood cells

Up to what percentage of the world's flora consisted of cycads during the triassic period? 100% 75% 50% 20%