Why did the chinese government install programs to plant large amounts of trees in northern china? i. to stop erosion ii. to improve air quality iii. to act as a windbreak iv. to reintroduce animal species a. i. and ii. only b. ii. and iv. only c. i., ii., and iii. only d. i., ii., iii., and iv.

Where does the availability of water pose the greatest problem

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

Countries trade with each other because resources are not evenly distributed across the globe. true or false