The carbon cycle is the biogeochemical cycle by which carbon is exchanged between the biosphere, geosphere, hydrosphere and atmosphere of the Earth
Its used to measure the total amount of available motion at a specific joint
So I guess the answer would be
A. a joints maximum range of motion
Okay.
Predators: Wolves, Fox
Prey: Prairie dog, grass
Bison eat grass and stuff.
Is this what you needed?