La atmósfera de la Tierra está compuesta por aproximadamente 20% de oxígeno (O2), 79% de nitrógeno (N2) y 0.38% de dióxido de carbono (CO2). Explica por qué los dirigibles flotan si se llenan de hidrógeno (H2) o de helio (He). ¿Qué gas es preferible para llenar los dirigibles? ¿Por qué?

The answer is c hope this

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.

Amutation is basically the change in the gene, caused by alteration of single based units in the dna, or the genes or chromosomes were rearranged in the dna