Biogeochemical cycles involve
A) only biological processes.
B) heat loss from both respiration and photosynthesis.
C) only geological and chemical processes.
D) the cyclic movement of materials through all planetary ecosystems.
Question 2
Throughout the world, there is general agreement that the safest place to store long-term nuclear waste is
A) in the major oceans.
B) in space.
C) in high security above ground buildings.
D) deep underground.