) Explain with examples, different types of landforms produced by volcanic eruptions.
2) Explain how the depositional work done by river Ganga has been beneficial to human activities.
3) The marine pollution is ultimately going to be harmful to the man himself. Discuss.
4) Give an account of the desert biome with the help of following points:
a) Location
b) Plant life
c) Animal life
d) Human life
Answers
Answer:
1) The most obvious landforms created by lava are volcanoes, most commonly as cinder cones, composite volcanoes, and shield volcanoes.
2) The cultivated area of the Ganges valley in Uttar Pradesh and Bihar benefits from a system of irrigation canals that has increased the production of such cash crops as sugarcane, cotton, and oilseeds. The older canals are mainly in the Ganges-Yamuna Doab (doab meaning “land between two rivers”)
3) The increased concentration of chemicals, such as nitrogen and phosphorus, in the coastal ocean promotes the growth of algal blooms, which can be toxic to wildlife and harmful to humans. The negative effects on health and the environment caused by algal blooms hurt local fishing and tourism industries.
4) a) sahara
b) cactus
c) sudwinder snake