A specific type of physical change is a phase change
This is because you have to let your food digest a bit before continuing your work out to prevent cramps and this like that.
Answer: Independent Variable
Explanation: Already explained this one in another post.
number 8 is b because when you eat plants or animals, it get transfred to glucose which is then transfered to atp. Think about it this way, when you are sick, you dont just go outside in the sun to recharge and then you suddenly get better, and energy, you have to rest and eat certain foods that will restore your ATP levles.
