Luckily, Biogeochemical Cycles on Earth Are Too Big and Complex

Luckily, biogeochemical cycles on Earth are too big and complex for anything humans do to impact them. True or False?

A) False. For example, we've added carbon dioxide to the atmosphere, and it is changing our climate.
B) True. The earth processes cycle on in natural patterns, regardless of what we do.
C) False. Everything we do impacts biogeochemical cycles.
D) True. Humans haven't been around long enough to have an impact.
E) False. We do impact them, but they always bounce right back to normal.
"Biology in Perspective"