Human activities in the recent past have caused the increased concentration of carbon dioxide in the atmosphere, but a lot of it does not remain in the lower atmosphere because
1. its escape into the outer stratosphere
2. the photosynthesis by phytoplankton in the oceans
3. the trapping of air in the polar ice caps.
Which of the statements given above is/are correct?
Prelims
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Environment › Climate Change
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Environment › Ecological Theory
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Environment › Ecological Theory
Consider the following statements: 1. Biodiversity is normally greater in the lower latitudes as compared to the higher latitudes. 2. Along the mountain gradients, biodiversity is normally greater in the lower altitudes as compared to the higher altitudes. Which of the statements given above is/are correct?
Options
Answer
(C)
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Environment › International Org,TreatiesXEnvironment
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Environment › Marine Ecosystem
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Environment › National Parks
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Environment › PollutionXImpact & remediation
Environment › PollutionXImpact & remediation
In the Union Budget 2011-12, a full exemption from the basic customs duty was extended to the bio-based asphalt (bioasphalt). What is the importance of this material?
1. Unlike traditional asphalt, bio-asphalt is not based on fossil fuels.
2. Bioasphalt can be made from non-renewable resources.
3. Bioasphalt can be made from organic waste materials.
4. It is eco-friendly to use bioasphalt for surfacing of the roads.
Which of the statements given above are correct?Options
Answer
(B)
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Environment › PollutionXSources