Answer:
Because the child was vaccinated against this disease, the germs are not able to travel from one person to the other, and the family in this case, is less likely to get the disease. Even his siblings, that didn't get the vaccine, will get some protection from getting sick. This is known as community immunity.
Explanation:
I would say false because fossil fuels are formed by dead animal matter
100,000 years ago is your answer
There are many answer you have to be specific
I think its acid fermentation, but I could be wrong. My class studied this a while ago.