Why would General Billy Mitchell describe Alaska in the 1930's as the "center" of the world? How could Alaska be both the "center" of the
world and relatively isolated at the same time?

Write a short paragraph of about 150-300 words. explain how the physical environment can limit human activities.

Which types of seismic waves travel through earths interior? select all that apply. a) l waves b) p waves c) s waves

Which ecosystem best fits the characteristics listed below? which ecosystem best fits the characteristics listed below? ii. seasonal migrations of millions of wildebeests, zebras, and elephants iii. large numbers of predators, such as lions iv. acacia trees and grasses a. the congo rainforest b. the african mangroves c. the serengeti grasslands d. the sahel