Although all of the following may have been critical to the development of an expanding brain, which do scientists believe would have contributed most directly to brain growth?
a. the migration into colder and less known areas placing a premium on learning
b. a genetic mutation resulting in a smaller jawbone and smaller facial muscles
c. the detoxification of foods, allowing humans to live to significantly older ages
d. the ability to conquer predators, allowing humans higher meat consumption levels
Question 2
El Pilar is located not far from Tikal:
a. in Mexico.
b. in Cuba.
c. in Spain.
d. on the border between Belize and Guatemala.
e. on the border between Guatemala and Honduras.
Brain signals that control hunger.
Sexual Orientation and the Brain
Regions of the brain
Brain nerve and hearing
A Critical Thinking Guide and Checklist
Fetal Development