Answer:
If something happens to one friend you have another one that can help you. The more people you're with, the safrer you are.
Explanation:
<span>combine sentences 2, 3, and 4 to create a series</span>
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.
The answer is d short of the non volley line in the opponents court
