1. What do you mean by Tributaries?
Tributaries are small rivers that join the main river. For example Son, Yamuna are the tributaries of Ganga.
2. What do you mean by "terrace farming"?
Terraces are built on steep slopes to create flat surfaces on which crops are grown. This is called terrace farming.
3. Define the term "population density".
Population density means the number of persons that live in one square kilometre of area.
4. Name the cash crops grown in the Ganga-Brahmaputra basin.
Sugarcane and jute are the cash crops grown in the Ganga-Brahmaputra Basin.
5. Which is the largest river basin in the world?
The Amazon River basin is the largest basin in the world.
6. Name some tributaries of the Ganga River.
Some tributaries of the Ganga River are: the Ghaghra, the Son, the Chambal, the Gantok, the Kosi.
7. What is the main occupation of the Ganga Brahmaputra basin?
Agriculture is the main occupation of the Ganga Brahmaputra basin.
8. Name the different types of houses that people live in rainforests.
People in rainforests live in:
- Thatched houses shaped like beehives,
- Large apartment-like houses called ‘Maloca’
9. What is population density?
Population density means the number of persons that live in one sq. km. of area.
10. In the fresh waters of which rivers is a variety of dolphin locally called Susu (also called blind dolphin found).
Ganga and Brahmaputra.