Answer:
16. Tidal Currents 17. Ocean Currents 18. Coastal Currents
Explanation:
Answer:
You use the control group against an experimental group to see if there is a change when you add a variable. Th control group is the group without the variable you are testing.
From what I have been taught at any point mutations can occur.
Cell divison is necessary to replace cells that are worn and aging. Cells do not have an indefinite life span. Fo example, the life span of a red blood cell is about 120 days.
