Answer:
Warming up before exercising has your cardiovascular system ready for physical activity by increasing blood supply to your muscles and boosting your body temperature. It can prevent you from having cramps on some parts of your body or prevent hurting yourself or in this case your muscles.
Explanation:
Hope this helped, that's what i got out of my lifetime wellness class.
A physical change is he starts to grow hair or he gets taller
Answer:
It consists of just a few kinds of atoms: carbon, hydrogen, oxygen, nitrogen, and phosphorus. Combinations of these atoms form the sugar-phosphate backbone of the DNA -- the sides of the ladder, in other words. Other combinations of the atoms form the four bases: thymine (T), adenine (A), cytosine (C), and guanine (G).
Explanation:
