Considering all major biogeochemical cycles, the human input is ________.
A) making major alternations in most cycles
B) insignificant
C) limited to the carbon cycle
D) never likely to be important
E) several times larger than the natural fluxes of mass and energy

Question

Quizplus · Accepted Answer

Human activities such as burning fossil fuels, deforestation, and fertilizer use are altering the carbon, nitrogen, and phosphorus cycles, among others. Therefore, human input is making major alterations in most cycles.

Considering All Major Biogeochemical Cycles, the Human Input Is ________