1. which of the following best summarizes how the environment impacted the growth of the maya? a. the maya had to adapt to living in high elevations with thin oxygen. b. the maya had to learn farming techniques to clear the dense rain forest. c. the maya had to build causeways and canals to adapt to living on an island. d. the maya had to expand their territory to find suitable farm land. 2. how were incan commoners grouped within their social class? a. by gender and age b. by family rank c. by wealth and status d. by religious worship