Major Domains of the Earth

How much surface of the earth is covered by the oceans ?

• 24 %

• 71%

• 54%

• 74%

Which is not the realm of the Earth ?

• Biosphere

• Mountains

• Lithosphere

• Hydrosphere

Which gas is necessary for respiration ?

• Carbon Dioxide

• Nitrogen

• Oxygen

• Argon

A narrow zone of the earth where all forms of life exists.

• Biosphere

• Atmosphere

• Hydrosphere

• Lithosphere

A narrow land which connects North-America and South-America

• Ural Mountains

• Isthamus of Panama

• Suez Isthamus

Which layer protects the Earth from the harmful radiations of the Sun ?

(a)  

Air, water and land exists in which realm ?

(a)  

Which is the largest Ocean ?

• The Indian Ocean

• The Southern Ocean

• The Atlantic Ocean

• The Pacific Ocean

Mountains arranged in a line is called

• Peak

• range

• valley

Which human activities are responsible for causing ecological imbalance ?

• Afforestation

• polluting water bodies

• Releasing harmful gases in the atmosphere

• Using plastic bags

• All of the above