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 of:
1. its escape into the outer atmosphere.
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?
Important Questions on Environment & Ecology
1. decomposed micro-organisms to the surface
2. nutrients to the surface
3. bottom-dwelling organism to the surface
Which of the statements given above is/ are correct?
Consider the following
1. Carbon dioxide
2. Oxides of Nitrogen
3. Oxides of Sulphur
Which of the above is/are the emission(s) from coal combustion zones at thermal power stations?
Microbial fuel cells are considered a source of sustainable energy. Why?
1. They use living organisms as catalysts to generate electricity from certain substrates.
2. They use a variety of inorganic materials as substrates.
3. They can be installed in waste water treatment plants to cleanse water and produce electricity.
Which of the statements given above is/ are correct?
Consider the following regions:
1. Eastern Himalayas
2. Eastern Mediterranean region
3. North-West Australia
Which of the above is/are biodiversity hotspot(s)?
