Dairy products, green leafy vegetables, tofu made with calcium sulfate, sardines canned with the bones, and calcium-fortified foods are good sources of calcium. complete the statement about factors that affect calcium absorption. calcium absorption is enhanced a. when the body’s need for calcium is high

b. as you get older

c. when you consume more than 800 mg of calcium at one time

d. by consuming high-oxalate foods

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.