Determine whether the following disturbances will be followed by primary or secondary succession. in coastal areas, wind moves sand, blowing away or engulfing the soil, and eventually creating sand dunes: the introduction of livestock to an area leads to over-grazing that removes native grasses: a forest is cleared to gather lumber used for building houses: a lava flow down the side of a volcano destroys all vegetation and eventually turns into volcanic rock when it cools and hardens:

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.