The Arctic Ocean has the widest continental shelf of all the oceans; it extends 1,210 km seaward from Siberia. From the shelf rise numerous islands, including the Arctic Archipelago, Novaya Zemlya, the New Siberian Islands, and Wrangle Island. Continental shelves are an extension of coastal plains and are characterized by broadly-sloping submerged plains.

Correct Option: B

The Arctic Ocean has the widest continental shelf of all the oceans; it extends 1,210 km seaward from Siberia. From the shelf rise numerous islands, including the Arctic Archipelago, Novaya Zemlya, the New Siberian Islands, and Wrangle Island. Continental shelves are an extension of coastal plains and are characterized by broadly-sloping submerged plains.

Kalahari Desert of southern Africa is named after the Tswana word Kgala, meaning "the great thirst", or Kgalagadi, meaning "a waterless place". It has vast areas covered by red sand without any permanent surface water. It extends 900,000 km2 covering much of Botswana, parts of Namibia and regions of South Africa.

Correct Option: C

Kalahari Desert of southern Africa is named after the Tswana word Kgala, meaning "the great thirst", or Kgalagadi, meaning "a waterless place". It has vast areas covered by red sand without any permanent surface water. It extends 900,000 km2 covering much of Botswana, parts of Namibia and regions of South Africa.

Finland is often referred to as “the land of the thousand lakes”. This is because the lakes and rivers account for around 10 percent of the country's land.There are nearly 200,000 lakes in Finland. It has more lakes in relation to a country's size than any other. Finland has one lake for every 26 people.

Correct Option: D

Finland is often referred to as “the land of the thousand lakes”. This is because the lakes and rivers account for around 10 percent of the country's land.There are nearly 200,000 lakes in Finland. It has more lakes in relation to a country's size than any other. Finland has one lake for every 26 people.

Mount Erebus is the second highest volcano in Antarctica (after Mount Sidley) and the southernmost active volcano on earth. It is located on Ross Island, which is also home to three inactive volcanoes, Mount Terror, Mount Bird, and Mount Terra Nova. Mount Erebus has been active since c. 1.3 million years ago.

Correct Option: B

Mount Erebus is the second highest volcano in Antarctica (after Mount Sidley) and the southernmost active volcano on earth. It is located on Ross Island, which is also home to three inactive volcanoes, Mount Terror, Mount Bird, and Mount Terra Nova. Mount Erebus has been active since c. 1.3 million years ago.

The United States of America (22.6%), Russia (14.4%) and China (12.6%) together account for about 50 percent of the global coal deposits. Australia (8.9%) and India (7.0%) come next. In terms of coal production, China, USA and India are the world’s top most countries.

Correct Option: A

The United States of America (22.6%), Russia (14.4%) and China (12.6%) together account for about 50 percent of the global coal deposits. Australia (8.9%) and India (7.0%) come next. In terms of coal production, China, USA and India are the world’s top most countries.