Arelationship in which one species benefits and the other is unaffected is called

Plz will mark! the diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Greenthe fossil record is the history of life recorded byhuman observationgod.climatologists.remains of the past.

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?