9. Use the diagram to answer the question below. cell chloroplast
wall
cell
membrane vacuole nucleus
un
DO
The cell membrane plays an essential role in the life of the cell. How does the cell membrane
help maintain the health of the cell in the figure above?

Ascientist wants to determine the effect of a new type of gasoline. he fillsone car with normal gasoline and another identical car with the new gasoline.which is the control group? a. the new type of gasolineb. the car with the normal gasolinec. the car with the new gasolinethe amount of gasoline usedd. the amount of gasoline used

Which statement explains how gravity and intertia work together

18. over time, how do sand dunes tend to migrate? a. perpendicular to the movement of the wind b. in the same direction as the wind blows c. toward the wind d. in random directions