Identify the true statement. Choose one: A. A biogeochemical cycle involves only physical components. B. The rock cycle is the only mass-transfer cycle on the Earth. C. The hydrologic cycle involves reservoirs above, below, and at the Earth's surface. D. The carbon cycle is an example of a purely geochemical cycle.

D

Explanation:

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

Bam

Explanation: Scientists are able to understand Earth's interior by studying seismic waves. ... Seismic waves travel at different speeds when they pass through different types of material, so by studying seismograms, scientists can learn a lot about Earth's internal structure.