How many countries are included in the UN?

(Pluto)

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

What is the amount of organic matter in all living organisms in a habitat called?

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