How is the sun affecting the dead sea

What are two reasons for why a species might disappear from the fossil record?

Which layer will become saturated first when rain falls?

Multicellular organisms use cell division, mitosis, for growth and the maintenance and repair of cells and tissues. single-celled organisms may use cell division as their method of reproduction. regardless of the reason for mitosis, the process ensures genetic continuity. what is the step in the cell cycle that ensure genetic continuity?