How does water affect mass movements and how do i put it in my analysis?

Select the situation bellow that would produce a total displacement of zero. a. a trip to the moon and then to mars b. a horse galloping from one end of a field to another c. the criss-crossing path of a bug as it flies from flower to flower d.a round-trip ride to school and back

The third stage of cellular respiration is (2 points)

Why is it to call the calvin cycle the light independent reactions vs the dark reactions