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Climate Change Essay

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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 …show more content…

These effects have been demonstrated mainly in controlled environments such as growth chambers, greenhouses, and plastic enclosures.

Higher levels of atmospheric CO2 also induce plants to close the small leaf openings known as stomatas through which CO2 is absorbed and water vapor is released. Thus, under CO2 enrichment crops may use less water even while they produce more carbohydrates. This dual effect will likely improve water-use efficiency. At the same time, associated climatic effects, such as higher temperatures, changes in rainfall and soil moisture, and increased frequencies of extreme meteorological events, could either enhance or negate potentially beneficial effects of enhanced atmospheric CO2 on crops. Meteorological Events such as hurricanes and heavy storms damage trees and hence reduce productivity. Droughts disrupt crop rotation, many plants are not adapted to such environments and are therefore unable to survive hence productivity is reduced.

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For interior regions, there might be beneficial gains in agricultural production resulting from the indirect effects of a warmer climate and adequate precipitation, especially in higher latitudes across Canada and Russia. The increased carbon dioxide might also directly increase plant growth and productivity as well. In fact, this theory, known as the Carbon dioxide Fertilization Effect, has led some scientists to controversially suggest that the Greenhouse Effect

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