Genetic mutations .
a. can occur naturally
b. are always passed on to the next generation
c. are most common in body parts that are used frequently
d. are mainly caused by diseases associated with fetal development

Giga is the second highest prefix on the normal scale, the first is terra.

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.

When scientist examine data such as historical documents, they are using the "scientific methods"