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CBSE - IX - Biology - Natural Resources

What are the 3 cause of greenhouse effect

Asked by yadhavrushikesha 11th October 2018, 8:13 PM
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CBSE - IX - Biology - Natural Resources

Plz explain the answer of 24 and 25

Asked by vikasg13.hardware 29th December 2017, 12:32 PM
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CBSE - IX - Biology - Natural Resources

What are communicable diseases?

Asked by Sujit 11th October 2017, 4:49 AM
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CBSE - IX - Biology - Natural Resources

"Urbanization and industrialization is mainly responsible for the increase in environment pollution". Justify this statement and suggest ways and means to check it.

Asked by Topperlearning User 27th April 2016, 7:56 AM
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CBSE - IX - Biology - Natural Resources

List two activities of man which lead to environmental pollution.

Asked by Topperlearning User 27th April 2016, 7:55 AM
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CBSE - IX - Biology - Natural Resources

What is Smog?

Asked by Topperlearning User 27th April 2016, 7:55 AM
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CBSE - IX - Biology - Natural Resources

What do you understand by air pollutant? What are the chief constituents of air impurities?

Asked by Topperlearning User 27th April 2016, 7:54 AM
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CBSE - IX - Biology - Natural Resources

What makes the biosphere dynamic but stable system?

Asked by Topperlearning User 27th April 2016, 7:53 AM
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CBSE - IX - Biology - Natural Resources

Design an activity to show how convection currents are set up in the air and what is the nature of these currents?

Asked by Topperlearning User 27th April 2016, 7:53 AM
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CBSE - IX - Biology - Natural Resources

How is atmosphere on Earth different from the atmosphere on Venus and Mars? State two ways by which percentage of carbon dioxide is fixed on the earth.

Asked by Topperlearning User 27th April 2016, 7:52 AM
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CBSE - IX - Biology - Natural Resources

List two biotic components of biosphere.

Asked by Topperlearning User 27th April 2016, 7:52 AM
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CBSE - IX - Biology - Natural Resources

(a)State the group of compounds that leads to ozone depletion? (b)What is the significance of intact ozone layer?

Asked by Topperlearning User 21st March 2016, 1:46 PM
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CBSE - IX - Biology - Natural Resources

Write a note on how forests influence the quality of air.

Asked by Topperlearning User 21st March 2016, 11:47 AM
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CBSE - IX - Biology - Natural Resources

What are the affects of pollution on human beings

Asked by mkmishra101 21st January 2016, 6:23 PM
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CBSE - IX - Biology - Natural Resources

What is greenhouse effect

Asked by mkmishra101 21st January 2016, 6:20 PM
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CBSE - IX - Biology - Natural Resources

Atmosphere is essential for life why. List three reasons in support of this statement.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Biology - Natural Resources

Near coastal areas, wind blows from sea towards the land during the day while wind current moves from land to the sea during the night. Explain giving reason.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Biology - Natural Resources

What is ozone hole? Where is it found? What is its effect?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Biology - Natural Resources

State the role of the atmosphere in climate control?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Biology - Natural Resources

The atmosphere acts as a blanket. How?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Biology - Natural Resources

What are the effects of air pollution on human beings?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Biology - Natural Resources

Write a short note on greenhouse effect.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Biology - Natural Resources

What are the two ways by which carbon dioxide is fixed?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Biology - Natural Resources

What is atmosphere? Name the five layers of atmosphere.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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