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Climate Change

explanatory Essay
1635 words
1635 words
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Global climate change has positive and negative effects on marine and terrestrial ecosystems. The cause of global climate change is said to be because carbon dioxide is being emitted through the large scale burning of oil, coal and gas, with an additional contribution coming from clearing of tropical forests and woodlands which results in wildlife life destruction. The carbon dioxide traps heat from the sun in the earth's atmosphere and prevents it from being sent back out into space. The heat that stays trapped in the atmosphere causes the global temperature to increase. Globally, average temperatures are expected to increase between 1.5 to 6.1 degrees Celsius in the next hundred years.

Climate change will have significant impacts on the global temperature such as an increase in temperature, change in weather patterns and sea-level rise. Sea-level is expected to rise 95 cm by the year 2100, with large local differences due to tides, wind and atmospheric pressure patterns, changes in ocean circulation, vertical movements of continents etc; the most likely value is in the range from 38 to 55 cm. The relative change of sea and land is the main factor: some areas may experience sea level drop in cases where land is rising faster than sea level.
Indirect factors are generally listed as the main difficulties associated with sea-level rise. These include erosion patterns and damage to coastal infrastructure, salinization of wells, sub-optimal functioning of the sewerage systems of coastal cities with resulting health impact, loss of littoral ecosystems and loss of biotic resources.

Plants grow through the well-known process of photosynthesis, utilizing the energy of sunlight to convert water from the soil and carbon dioxide from the air into sugar, starches, and cellulose. CO2 enters a plant through its leaves. Greater atmospheric concentrations tend to increase the difference in partial pressure between the air outside and inside the plant leaves, and as a result more CO2 is absorbed and converted to carbohydrates. Crop species vary in their response to CO2. Wheat, rice, and soybeans belong to a physiological class called C3 plants that respond readily to increased CO2 levels. Corn, sorghum, sugarcane, and millet are C4 plants that follow a different pathway. The latter...

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Bibliography

William P. Cunningham Principles of Environmental Science
Mary Ann Cunningham

Fakhir A. Bazzaz
Eric D. Fajer Plant Life in a CO2 Rich World

Amy Mathews-Ames Turning up the heat: How Global Warming Threatens
Ewann A. Berntson Life in the Sea

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In this essay, the author

  • Explains that global climate change has positive and negative effects on marine and terrestrial ecosystems. carbon dioxide traps heat from the sun in the earth's atmosphere and prevents it from being sent back into space.
  • Explains that climate change will have significant impacts on the global temperature such as an increase in temperature, change in weather patterns, and sea-level rise.
  • Explains that plants grow through the well-known process of photosynthesis, utilizing the energy of sunlight to convert water and carbon dioxide into sugar, starches, and cellulose.
  • Explains that the greenhouse effect might be a blessing in disguise. warmer climates and adequate precipitation could benefit agricultural production, and increase plant growth and productivity.
  • Explains that higher air temperatures will speed the natural decomposition of organic matter and increase the rates of other soil processes that affect fertility.
  • Explains that coral reefs are among the most sensitive ecosystems to long-term climate change. coral bleaching is most often associated with a significant rise in sea surface temperatures.
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