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Glo bal warming

Glo bal warming. WHAT IS GLOBAL WARMING ?. increasing concentration of greenhouse gases like carbon dioxide in the atmosphere Carbon dioxide traps the sun rays This rises the earth’s temperature Ice at the polar regions melt Water levels in the water bodies increases Causing floods.

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Glo bal warming

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  1. Globalwarming

  2. WHAT IS GLOBAL WARMING ? • increasing concentration of greenhouse gases like carbon dioxide in the atmosphere • Carbon dioxide traps the sun rays • This rises the earth’s temperature • Ice at the polar regions melt • Water levels in the water bodies increases • Causing floods

  3. What causes global warming • increase in carbon dioxide • cutting down trees • Increase in use of fossil fuel and domestic fuel • The smoke left by the industries etc

  4. EFFECTS OF GLOBAL WARMING • EFFECTS ON WEATHER AND CLIMATE • RISE IN SEA LEVEL. • EFFECTS ON RANGE OF SPECIES DISTRIBUTION. • crop PRODUCTION.

  5. EFFECTS ON WEATHER AND CLIMATE. • Warming of the troposphere & cooling of the stratosphere . • This would cause wide-spread change in precipitation patterns due to changed in pattern of the air mass movements. • The precipitation will increase at higher latitudes but will decrease at lower latitudes. • The frequency of extreme drought and floods will increase. • Increase in human disease

  6. RISE IN SEA LEVEL • Rise of temperature could lead to the melting of ice sheets that hold back glaciers. This results in rising sea levels. • A rise of even half a meter in sea level would affect human population, one third of which lives within 6okm of a coast. • Thus, rise in sea level will have negative impact on human settlements, tourism, water supply, fisheries, agriculture and coastal ecosystems.

  7. EFFECTS ON RANGE OF SPECIES DISTRIBUTION. • Each plant and animal species occurs within a specific range of temperature • Shift in temperature range affects altitudinal and latitudinal distribution pattern of organisms. • Many species may shift slowly poleward or towards high elevations of mountain areas. • Rapid increase in temperature may cause large scale death of many trees, as they are sensitive to temperature stress • . • Many species may disappear, as they are unable to migrate fast enough to track temperature change.

  8. CROP PRODUCTION. • Global warming will reduce crop production due to increased incidence of plant diseases • explosive growth of weeds and enhanced basal rate of respiration of plants. • In temperate regions, small rise in temperature may enhance the crop productivity slightly • larger temperature change will decrease the crop productivity there. • in tropical and subtropical regions, small rise in temperature. will have detrimental effect on crop productivity.

  9. HOW TO PREVENT GLOBAL WARMING • Plant trees.

  10. Conservation of earth • Reduction in green house gas emission by reducing the use of fossil fuels an • developing alternative renewable sources of energy like solar energy, wind energy etc. • Increase of the vegetation cover, particularly forest for photosynthesis utilization of CO2.

  11. Stop global warming

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