* Temperate deciduous forest: This ecosystem is characterized by trees that lose their leaves in the winter. It is found in the eastern United States, but not in Nepal.

* Temperate rainforest: This ecosystem is characterized by tall trees and a dense understory. It is found in the Pacific Northwest of the United States, but not in Nepal.

* Mediterranean forest: This ecosystem is characterized by trees and shrubs that are adapted to dry summers and wet winters. It is found in the Mediterranean Basin, but not in Nepal.

* Desert: This ecosystem is characterized by a lack of water. It is found in the southwestern United States, but not in Nepal.

* Tundra: This ecosystem is characterized by a cold climate and a lack of trees. It is found in the Arctic and Antarctic regions, but not in Nepal.