Geography Mixed Quiz: Set 72

About half of the oxygen made on Earth comes from ocean phytoplankton and cyanobacteria, more than from rain forests, and sea water holds far less oxygen than air.

The Teesta flows from Sikkim through West Bengal into Bangladesh and joins the Brahmaputra, so it has nothing to do with the Indus system.

At Rudraprayag in Uttarakhand the Mandakini, which flows down from near Kedarnath, joins the Alaknanda. Rudraprayag is one of the Panch Prayag, the five holy confluences of the Alaknanda on its way to forming the Ganga.

Of the four, the Sabarmati is both the shortest river and the one with the smallest basin. The Sabarmati rises in the Aravalli hills of Rajasthan and flows about 370 km south-west through Gujarat, past Ahmedabad and Gandhinagar, into the Gulf of Khambhat.

Saline soils are found in dry regions and in waterlogged or swampy areas, but they are poor in nitrogen, not rich in it.

A pull factor is something attractive at the destination that draws people towards it, and better pay is the classic example.

Tobacco, cocoa and rubber all come from the Americas and spread to Asia, Africa and Europe after Columbus. The exchange of plants and animals between the Americas (New World) and Afro-Eurasia (Old World) after 1492 is called the Columbian Exchange.

Land left uncultivated for more than one year but less than five years falls in this class of India's land-use records.

The Levant is the land on the eastern coast of the Mediterranean Sea in West Asia. The word comes from the French 'lever', to rise, meaning the land where the sun rises, as seen from Europe.

Only the Aral Sea has shrunk drastically because of human activity. The Aral Sea, on the border of Kazakhstan and Uzbekistan, was once the world's fourth-largest lake.

Lake Faguibine in northern Mali, once one of the largest lakes of West Africa, has dried up and turned into desert.

The names themselves are contributed by the thirteen member countries of the panel, but the centre at New Delhi, which the India Meteorological Department runs, takes the next name from the list, announces it when a deep depression strengthens into a cyclonic storm, and issues advisories to all the member…

The Pampas spread over the plains of Argentina and extend into Uruguay, and they are the home of wheat and alfalfa farming, of large cattle ranches called estancias and of the herdsmen known as gauchos; the grassland owes its growth to moderate rainfall and the cool season of the mid…

Easter Island, or Rapa Nui, is a Polynesian island in the south-eastern Pacific that has belonged to Chile since 1888.

Ahmedabad was founded by Ahmad Shah in 1411 on the left bank of the Sabarmati, and the river gives its name to the Sabarmati Ashram from which Gandhi began the Dandi march in 1930.

All three features describe farming done mainly to feed the farmer's own family, with only a small surplus for sale or barter.

A cyclone is a low pressure system, so air flows inwards towards the centre, and the Coriolis force deflects moving air to the left in the Southern Hemisphere, which turns that inflow into a clockwise spiral.

India's territorial waters, where it has full sovereignty, extend 12 nautical miles (about 22.2 km) from the baseline of its coast.

Lake Turkana is the world's largest desert lake and a UNESCO World Heritage Site known as the Jade Sea, but it lies in Kenya, not South Sudan.

Nanda Devi belongs to the Kumaon Himalaya, but Namcha Barwa and Nokrek are wrongly placed. Nanda Devi (7,816 m) is the highest peak lying wholly within India and the highest in Uttarakhand.