Which of earth's sphere are involved in the water cycle ? a. biosphere, atmosphere, and hydrosphere onlyb. biosphere, atmosphere, lithosphere, and hydrospherec. biosphere and atmosphere onlyd. biosphere, atmosphere and lithosphere only

The answer is: b. biosphere, atmosphere, lithosphere,and hydrosphere

Water cycle start from the water on hydosphere (such as rivers or sea) that started to evaporated and formed clouds on the atmosphere. Then it would become rain and fall down to wide variety of biosphere. Some of them eventually absorbed and stored in the litosphere.

the endomembrane system i think