What Do Researchers Typically Focus on When They Study a Particular

Multiple Choice

What do researchers typically focus on when they study a particular biogeochemical cycle?

A) the nature and size of the reservoirs
B) the rate of element movement between reservoirs
C) interaction of the current cycle with other cycles
D) both the nature and size of the reservoirs,as well as the rate of element movement between reservoirs
E) both the rate of element movement between reservoirs and the interaction of the current cycle with other cycles