The duties of tribal religious leaders, or shamans, included
a. supervision of ceremonial life.
b. preservation of the tribe's medicinal knowledge .
c. communication with the natural world.
d. all of the above.
Question 2
Why did California Indians not develop maize agriculture?
a. They did not have the necessary knowledge to plant corn.
b. Most of them had access to a variety of food sources and there was no need to develop agriculture.
c. They traded for corn, beans and squash with tribes further south.
d. They relied heavily on the cultivation of indigenous plants and thus did not need to grow corn.
The deep-sea vent hypothesis for the origin of life
Origin of the plant life cycle.
Chemistry of life: four key concepts
Life cycle of Plasmodium vivax
Rural Life
Simplified view of retrovirus life cycle