Page 130 - SST Class 06

4. What do you understand by the balance of biosphere?
5. Write a short note on various continents of the world.
6. How is man disturbing the balance in nature?

1. Why is it necessary to maintain the balance among the land, water and air?

2. Imagine if there would be no landforms on the Earth except plains. What would happen then?

Andes Mountain

The Andes is the longest range in the world and boasts some of the
highest peaks. The range is also known for its volcanoes, ruins of long-
ago civilisations and the source of a malaria treatment.

Located along the entire western coast of South America, the Andes
mountain range is about 4,500 miles (7,242 kilometres) long. The
mountain range spans seven countries – Venezuela, Colombia, Ecuador,
Peru, Bolivia, Chile and Argentina and can be found between 10
degrees north and 57 degress south latitudes and 70 degrees to 80
degrees west longitude. It is up to 500 miles (804 km) wide.
The only mountains that are taller than the Andes are the Himalayas Mountains and their adjacent
ranges, including the Hindu Kush. The average elevation in the Andes is about 13,000 feet (3,962
metres). The highest elevation in the Andes is Mount Aconcagua in Argentina, which is 22,841 feet
(6,962 m) above sea level.

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