Which answer choice most appropriately fits in the blank? cause: erosion and weathering break down rocks into smaller pieces. effect:

a. then, the waves hit rocky cliffs and break the rocks apart.
b. then, the small rock pieces build up and create new rock.
c. then, the rocks and pebbles carried by the organisms to carve out canyons and gorges.
d. then, the wind, sand, and pebbles beat against the rocks and the rocks break

Atp is is our little "pocket" of energy. of course, if you have too little, then it means you have too little energy, and you'll pass out. the way to not have enough, is to have no energy sources (glucose, fats, proteins). you can't have too many atp molecules. cycles like the krebs cycle produce it, but if you have too much of any substrate (or too little for that matter), the cycle stops and atp is no longer made (it stops until substrate levels are such that the process can go on). in any case, this is unlikely since atp is constantly hydrolyzed and remade, even while you're asleep. you won't have too much. if you have zero, you are dead or dying.