Meena cannot be vaccinated because of her allergies, but she is protected to some degree from catching childhood diseases because of immunity, which means that at least 90 percent of people in her local community have been immunized.

Meena cannot be vaccinated because of her allergies, but she is protected to some degree from catching childhood diseases because of herd immunity.

Explanation:

there are treatment options for depression (mdd) that may work for you. one way of treating depression may be to affect the levels of certain chemicals that brain cells use to communicate, called neurotransmitters. scientists believe that certain neurotransmitters may be out of balance in depression.

although the exact way depression medications shown to ease overall depression symptoms in some people work is unknown, scientists think that some medications work by affecting the levels of a neurotransmitter called serotonin in the brain. other treatments work by affecting the levels of other neurotransmitters like norepinephrine or dopamine.

the structure of state governments are determined by. "state constitutins'

under the us constitution, all state governments are.'republics'