When a physical change in a sample occurs which of the following does not change

Which layer will become saturated first when rain falls?

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?

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?