What time of year is the river at the floor of the Grand Canyon most likely in the shadow of the canyon walls?

a) Summer
b) Spring
c) Fall
d) Winter

Suggest two reasons why irrigation is important for human development of the desert (4 marks)

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

Which two nations are doing the most to combat their environmental issues?