a. The rock cycle is the only mass-transfer cycle on the Earth. b. A biogeochemical cycle involves only physical components. c. The carbon cycle is an example of a purely geochemical cycle. d. The hydrologic cycle involves reservoirs above, below, and at the Earth's surface.
The hydrologic cycle also known as the water cycle involves the movement of water between the reservoirs above (atmosphere), below (underground) and at the earth's surface
