Everything has mass but everything has different weight
Deforestation D. the logging of trees, which removes producers from the carbon cycle
Combustion A. the burning of fossil fuels to make energy
Circulation E. the process which brings up nutrients from the deep ocean.Weathering C. the wearing down of rocks over time
Calcium carbonate B. the primary component of mollusk shells and coral skeletons. This is all I can help with. Sorry.
Because animals are an important part of wildlife, hunting licences insure that only a certain limit of animals can be killed.