Activation energy is the amount of energy required to begin a chemical reaction.
Answer:
D.
Explanation:
I think its D. sorry if its wrong
The answer is MMR. MMR is a <span>t is usually known a childhood vaccination. The MMR vaccine is generally
administered to children around the age of one year. all children, all
susceptible people at high risk for disease, adults born in 1957 or later who
have no been vaccinated w/ MMR (at least one dose).</span>
It’s true hope this is right
