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प्रश्न
How is our atmosphere different from the atmospheres on Venus and Mars?
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उत्तर
Earth’s atmosphere is different from those of Venus and Mars. This difference lies essentially in their compositions. Earth’s atmosphere is a mixture of nitrogen (79%), oxygen (20%), and a small fraction of carbon dioxide, water vapours and other gases. This makes the existence of life possible on Earth. However, the atmospheres on Venus and Mars mainly consist of carbon dioxide. The amount of carbon dioxide on these planets can range from 95% to 97%.
संबंधित प्रश्न
We often leave the lights switched on and fans running when we are not in the room. We switch on the air-conditioning even though we don’t really need it. We insist on being dropped to school in the car every day. Thus, we waste valuable energy which is generally produced by burning coal and petroleum. As you know, the burning of these fuels release gases that pollute the atmosphere.
Make a list of the similar things that we do without realizing that we are destroying the environment. Think of the ways that we can behave differently.
State whether the following is true or false.
The earth’s atmosphere contains 99 per cent oxygen, which is essential for life.
State any three characteristics of the mesosphere.
In your notebooks, draw a diagram showing the layers of the atmosphere. Mark clearly the ozone layer, the height at which a jet plane can fly and also the height up to which birds can fly.
Short Answer Type Question:
What is the atmosphere? Write about its different layers.
The lowest layer of the atmosphere is ______.
Wind movements cause the clouds particles to collide is _______.
A layer located in stratosphere which absorbs ultraviolet rays of sun called ______.
This is the earth’s magnetic belt ______.
An increase in carbon dioxide content in the atmosphere would not cause
