Which nation has been a model of democracy with fair and open elections?
mali
niger
mauritania
chad

Arid and semiarid subcategories are part of which climate

What is the result of the greenhouse effect? a. heat is deflected from the atmosphere. b. heat is released from the atmosphere. c. heat is kept in the atmosphere. d. plants are able to grow in the tropics where the air is the heaviest.

Which season occurs in the northern hemisphere when the sun is at its lowest point in the sky