Part one of term paper
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 ...

Part two of term paper
... in the effective gasses, threatening a disruption to the equilibrium between incoming and outgoing energy, and a resulting average global warming." From 1880 to today, by many measurements, the global average temperature has increased by 0.5 Degrees Celsius. Human and ecological systems are already vulnerable to a range of environmental pressures, including climate extremes and variability. Globa ...