What was a major factor for the increase in human populations? ...

[karateprodigy]

What was a major factor for the increase in human populations?
 
  a. A large stable base of calories.
  b. The hunter-gatherer societies.
  c. Reduction of common diseases.
  d. Access to better medical care.

Question 2

The selective serotonin re-uptake inhibitors:
 
  a. Opens the serotonin pump so that serotonin is inhibited.
  b. Block the serotonin re-uptake pump so that serotonin stays in the synapse.
  c. Electively inhibits serotonin production.
  d. Promotes the uptake of inhibitors that produce serotonin.

[debra928]

Answer to Question 1

A

Answer to Question 2

B