Answer:
maybe true
Explanation:
It really depends on what you teacher/coach tells you but most times when doing CPR you should use try and do it, your trying to save lives.
Answer:
through calories and how much we have burned, you can also measure it through blood sugar levels.
Explanation:
Several vaccines are made by taking toxins and inactivating them with a chemical (the toxin, once inactivated, is called a toxoid). By inactivating the toxin, it no longer causes disease. The diphtheria, tetanus and pertussis vaccines are made this way.
