Q. Sources of methane in atmsphere are biomass burning, enteric fermentation and:

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Q. Chlorofluorocarbons are synthetic compounds used extensively for:

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Q. When did green Revolution start?

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Q. IPCC, introduced concept of Global Warming Potentials in:

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Q. A compound, consist of atom of two or more of elements, along with a chemical combination of:

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Q. 'CFCs' are used in fire extinguishers and as propellants in:

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Q. Semi conductor silicon Boron, used in providing energy to:

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Q. Energy produced from sun is called:

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Q. In troposhere, convection is process responsible for transfer of:

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Q. What are two stages involved in photosynthesis?

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Q. Greenhouse gases are carbon dioxide, methane and:

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Q. Evaporation' is process of:

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Q. Ecosystem is a distinct system of interdependent plants and animals, along with their:

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Q. Stratospheric ozone is measured by a unit called:

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Q. Currently, proportion of carbondioxide in atmosphere is:

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Q. Sources of nitrous oxide includes:

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Q. Average weather in a particular region is known as:

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Q. UV-B radiation adversely affect immune system, causing:

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Q. What does tropical rainforest provide?

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Q. In 1987, montreal protocol agreement was scaling down of:

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