True or false for most people getting 8 to 9 ours of sleep improves physical health and improves everyones mood

The correct answer
True
This is because sleep enables the body to regenerate and relax. Sleep also balances the neurotransmitters in the brain increasing production of dopamine which is a feel good neurotransmitter which improves one mood.

It usually depends on your teacher but look up “ hope 4.07 dba study guide quizlet” and it should .

Immunization is the introduction of a foreign substance to provoke  the immune response system.  immunizations are the same as vaccinations. it introduces foreign (but dead/ weakened) illnesses to train the body to fight against them. specific viruses and bacteria have specific antigens, antigens act sort of like name tags. these name tags the immune system recognize what's dangerous to the body and what's safe.