Why do governments grow more complex as communities grow larger? O people grow bored with the older systems of government
the use of irrigation techniques varies from place to place
because the empire becomes too wealthy
having more people brings more problems

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.

answer; the population in brazil is very diverse there are many races and ethnic groups