'Human-Environment Interactions — Tropical and Subtropical Regions' — Practice

Question 1

Compare the climate of the Amazon basin and the Ganga-Brahmaputra basin.

Accepted Answer

The Amazon basin has an equatorial climate -- hot (25-28 C) and humid all year with over 200 cm of rain and no real winter. The Ganga-Brahmaputra basin has a tropical monsoon climate with hot summers, a wet monsoon (June-September), and a cool dry winter, receiving 100-200 cm of rain mainly during the monsoon.

Question 2

Why is the Ganga-Brahmaputra basin one of the most fertile regions in the world?

Accepted Answer

The rivers deposit fertile alluvial soil across the plains each year. Combined with the monsoon rainfall, abundant water, and a warm climate, this supports intensive agriculture -- rice, wheat, sugarcane, jute, and tea -- making the basin densely populated and highly productive.

Question 3

Describe the life of people in the Amazon rainforest.

Accepted Answer

Indigenous tribes (like the Yanomami and Kayapo) practise shifting agriculture, fishing, hunting, and gathering forest products like Brazil nuts and rubber. They travel by boat, build stilt houses to avoid floods, and traditionally live in harmony with the forest.

Question 4

What are the major environmental challenges faced by the Sunderbans?

Accepted Answer

Flooding from heavy monsoon rain, cyclones and storm surges from the Bay of Bengal, pollution, deforestation, and the effects of climate change including sea-level rise.

Practice — 'Human-Environment Interactions — Tropical and Subtropical Regions'

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