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Search results 21 - 30 of 5332 matching essays
- 21: Global Warming
- ... has been innovations in energy use (e.g., fire, descending the food-chain, beasts of burden, fossil fuels, high-energy agriculture). Thus, the development of an abundant and cheap energy source would have a profound effect. Another 10-fold (or more) surge would produce a population of 60 to 125 billion. GLOBAL TEMPERATURE AND GREENHOUSE GASES Figure 2. Greenhouse Gases and Mean Global Temperature (Greenhouse gas concentrations and mean global temperature verses time). Time scale same as in Fig. 1. Gas-concentration data have been normalized to the 0 to 1 scale on ...
- 22: Climate Change (term Paper)
- ... our very survival at risk.” In contrast to the impressions of many, the environment is an immediate problem. Though environmental concerns are widespread and many, perhaps the most challenging is the significant (30%) increase in greenhouse gasses accumulated in the atmosphere since the industrial revolution. At present rates of increase, these greenhouse gasses will again double by the turn of the next century. The effects this will have on the earth’s climate remain controversial, but most agree that the earth’s equilibrium temperature will be affected ... nutrients such as iron and other cations, which may stimulate primary productivity in maine phytoplankton. Their uptake of carbon dioxide could reduce its concentration in the atmosphere and contribute to global cooling by diminishing the greenhouse effect.” There can be little doubt that the combination of these, and various other factors, does induce a varying degree of cyclical climatic change. However, some suggest that none of them contribute sufficiently to ...
- 23: Chlorofluorocarbons (CFCs)
- ... carbon tetrachloride is also a feed stock for the production of CFC-11 and CFC-12. CFCs are released in relatively small quantities, but one kilogram of the most common CFCs may have a direct effect on climate 1000 times large than that of one kilogram of carbon. In addition over the last two decades the percentage increase of CFCs in the atmosphere has been higher than any other greenhouse gas. By 1990 the increase was 4-12% a year. CFCs also destroy ozone - itself a greenhouse gas - their net effect on climate is unclear. The strength of the indirect effect of ozone depletion depends on variables such as temperature of the upper atmosphere and cannot yet be measured with any ...
- 24: The Ozone Layer
- The Ozone Layer In environmental science the green house effect is a common term for the role water vapor; carbon dioxide and ozone play in keeping the earth’s surface warmer than it would normally be. The atmosphere is primarily transparent to infrared radiation from ... proportion back towards the earth. The atmosphere thus acts as a kind of blanket: without its presents the earth’s average ground temperature of 15 degrees Celsius would fall to -28 degrees Celsius. The termed greenhouse effect implies that a comparable effect keeps the interior of the green house warm. Actually, the man role of the glass in a green house is to prevent convection currents from mixing cooler air outside ...
- 25: Global Warning
- As the world's expanding population burns large quantities of fossil fuels and simultaneously cuts down large expanses of forests worldwide, the concentrations of CO2 and other greenhouse gases are building up in the atmosphere. "The green house effect is the (imperfect) analogy used to explain the atmospheric phenomenon that keeps our planet warm enough to sustain life." There is mounting evidence that this shift in Earth's atmosphere will lead to global changes and potentially major climatic disruptions . The major concern is not that the greenhouse effect is real;"we wouldn’t be here if it wasn’t." It’s that it "may be exacerbated by anthropogenic increases in the effective gasses, threatening a disruption to the equilibrium between incoming ...
- 26: Global Warming 2
- Like the glass in a greenhouse, certain gases that occur naturally in the atmosphere tend to trap the sun's heat. This natural "greenhouse effect" helps keep the Earth's average temperature at a comfortable 59° Fahrenheit. Without these greenhouse gases, the Earth would be about 0° F, like a deep- frozen snowball. The earth's climate is predicted ...
- 27: Global Warming
- Like the glass in a greenhouse, certain gases that occur naturally in the atmosphere tend to trap the sun's heat. This natural "greenhouse effect" helps keep the Earth's average temperature at a comfortable 59° Fahrenheit. Without these greenhouse gases, the Earth would be about 0° F, like a deep- frozen snowball. The earth's climate is predicted ...
- 28: Fossil Fuel Consumption, CO2 and Its Impact on Global Climate
- ... place to a certain extent. Since the Stockholm Conference in 1972, more and more attentions have been drawn to the issue of global warming, which is the increase in global temperature caused by the atmospheric greenhouse effect. We have greenhouse effect because some trace components of our atmosphere re-absorb and retain certain wavelengths of heat radiated from the Earth's surface, and the burning of fossil fuels have increased the tropospheric concentration of ...
- 29: The Depletion of Ozone Layer
- ... result that a larger human population would be exposed at risk. Gases that help destroy atmospheric ozone also play a part in another environmental problem, the gradual warming of the earth due to an enhanced greenhouse effect. Is a process by which the sun’s infrared rays hit the earth’s surface and then radiate heat back in the troposphere. Some heat escapes into space but the rest is trapped by naturally occurring carbon dioxide and other gases that act somewhat like the glass of a greenhouse surrounding the earth, keeping it warm. Without the warming, the planet would be too could to sustain life. But human activities have loaded the atmosphere with carbon dioxide, CFCs, and such gases as methane ...
- 30: The Financial Effects of Monetary Policy on Interest Rates
- ... growth of the money supply leads to a pattern of changes in the interest rate that reflects the interaction of the liquidity, income, and expectations effects which vary over time in relative strength. The liquidity effect involves the immediate impact of monetary on interest rates. The income effect pertains to the growth path rate of price levels. Lastly, the expectations effect deals with expected rates of inflation. These three entities will provide a basis for the analysis involved in this paper. Regression models will then be utilized in order to test the predictions that accompany ...
Search results 21 - 30 of 5332 matching essays
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