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प्रश्न
When is World Environment Day Celebrated?
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उत्तर
World Environment Day is celebrated on 5th June every year.
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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.
Fill in the blank
______ per cent of the atmosphere is made of nitrogen.
The upper part of the thermosphere is called the ______.
State whether the following is true or false.
The stratosphere is the lowest layer of the atmosphere.
Name the important gases that are found in the atmosphere.
Name different layers of atmosphere. Describe the important characteristics of each layer.
Tick the correct answer
As we go up the layers of the atmosphere, the pressure
Give an account of the different layers of the atmosphere.
Mountaineers carry oxygen in cylinders when they climb mountains that are more than 5000 m high. What could be the reason for that?
Write the significance of the following gases.
Oxygen __________________
Carbon dioxide __________________
Ozone __________________
Name the atmospheric layers.
What are the different layers of the atmosphere?
There is cut-off signal when NASA rocket reaches in the region of ______.
A layer of Ions inside the Mesosphere is called ______.
Atmosphere is divided into two main vertical regions the upper portion is Heterospshere and the lower is ______.
What are the elements of weather and climate?
What is mesosphere?
The ozone layer protects all life on earth from the harmful ______ rays of the sun.
Where does Ozone layer lie?
An increase in carbon dioxide content in the atmosphere would not cause
