Answer: C. moderate weight with high repetitions builds strength, while heavy weight with low repetitions builds
Explanation:
Mitochondria contains special enzymes that muscle cells need to utilize oxygen.
They all have sanitary/cleaning qualities.
It gets good food by excersicing, eating good food, and drinking lots of water. Eat a healthy diet, and lots of protein. Drinking water helps every part of your body. Drink 8-10 glasses or more a day. Excersise to stay strong, and able to do things.
~Silver