... which are caused directly or indirectly mostly by human activities. The constant variation in the global climate is pushing many of our ecosystems towards thresholds of quick irreversible transformation, the approach to such tipping points is noticed by different transformations in the arctic tundra vegetation, widespread desertification of arid lands, and increase in freshwater inputs to the arctic seas. Ecological tipping points are very hard to predict because their ... known as soil or subsoil that is frozen throughout the years permanently and has been frozen for thousands of years...

• Word Count: 2460
• Approx Pages: 10
• Has Bibliography
• Grade Level: Undergraduate

... waste by dumping it into the Arctic seas and any other low-level waste into the Seas of Japan"(Nitze). "Radiation from nuclear waste is known to cause a series of reactions in body tissue that results in damage to the bodies cells"(Daley). This can cause disease, such as cancer, injury, or death. The effects on the human body make the situation even worse for the people of the world. But, an even more ... common threat is the use of incinerators and landfills, for the reducing and disposal of waste ... ...

• Word Count: 2101
• Approx Pages: 8
• Has Bibliography

... 57F, but on any given day the mercury will almost certainly fall short of that mark or overshoot it, perhaps by a lot. Manhattan thermometers can reach 65F in January every so often and plunge to 50F in July (Lemonick 24). Glaciers are melting around the world, mountaintop snowcaps are becoming smaller, and coral reefs are dying off because the seas are becoming to warm. These are ... just a few of the many problems that are arising from the effects of global warming. The ... main causes of this warming is thought to be the burning of fossil fuels, such as coal, oil, and natural gas, wh...

• Word Count: 1296
• Approx Pages: 5
• Grade Level: High School

... heat, as well as the large amounts of body heat. The reason why this information is not well known is also very simple. The scientists who try to prove that global warming is happening are receiving funding from multimillion dollar organizations, as well as from over seas interests. Where as those who attempt to disprove this myth do not receive the funding. The pro-global warming lie ... has always received more attention from not only the press, but politicians as well. Global warming is a hoax which is taking money and research away from issues that are actually effecting us today. N...

• Word Count: 1407
• Approx Pages: 6
• Has Bibliography
• Grade Level: High School

... to survive in nutrient-poor tropical seas. This relationship is sensitive to such changes in the environment as cloudy waters or extreme temperatures. The stress on the corals can cause them to expel their algae, a phenomenon known as bleaching(Futurists, 1993). With the algae gone, the coral skeleton is visible and eventually it dies. Died corals lead further on to the death of the reef. There are four environmental ... shore. This also makes it hard for all of the species which use the coral reef to survive. Coral reefs are home to perhaps one-fourth of all marine species. This in tur...

• Word Count: 1284
• Approx Pages: 5
• Has Bibliography
• Grade Level: High School

... to survive in nutrient-poor tropical seas. This relationship is sensitive to such changes in the environment as cloudy waters or extreme temperatures. The stress on the corals can cause them to expel their algae, a phenomenon known as bleaching(Futurists, 1993). With the algae gone, the coral skeleton is visible and eventually it dies. Died corals lead further on to the death of the reef. There are four environmental ... shore. This also makes it hard for all of the species which use the coral reef to survive. Coral reefs are home to perhaps one-fourth of all marine species. This in tur...

• Word Count: 1326
• Approx Pages: 5
• Has Bibliography
• Grade Level: High School

... to survive in nutrient-poor tropical seas. This relationship is sensitive to such changes in the environment as cloudy waters or extreme temperatures. The stress on the corals can cause them to expel their algae, a phenomenon known as bleaching(Futurists, 1993). With the algae gone, the coral skeleton is visible and eventually it dies. Died corals lead further on to the death of the reef. There are four environmental ... shore. This also makes it hard for all of the species which use the coral reef to survive. Coral reefs are home to perhaps one-fourth of all marine species. This in tur...

• Word Count: 1321
• Approx Pages: 5
• Has Bibliography
• Grade Level: High School

... to survive in nutrient-poor tropical seas. This relationship is sensitive to such changes in the environment as cloudy waters or extreme temperatures. The stress on the corals can cause them to expel their algae, a phenomenon known as bleaching(Futurists, 1993). With the algae gone, the coral skeleton is visible and eventually it dies. Died corals lead further on to the death of the reef. There are four environmental ... shore. This also makes it hard for all of the species which use the coral reef to survive. Coral reefs are home to perhaps one-fourth of all marine species. This in tur...

• Word Count: 1301
• Approx Pages: 5
• Has Bibliography
• Grade Level: High School

... out of the five earliest thaws on the Tanana River occurred in the 1990's" (Global, Impact). With the melting of glaciers, icecaps and global warming the sea-level is expected to rise even more than it currently is. The rise of seas will cause the loss of coastal areas due to flooding. Areas such as the Chesapeake Bay and the costal area of the Gulf of Mexico are especially vulnerable. "The current rate of a sea ... warmer air and water temperatures sea-life along the coast California is moving northward (EPA, Impacts). With the decline of habitat nearly 50 percent of Adelie penguins ha...

• Word Count: 1577
• Approx Pages: 6
• Grade Level: High School

... due to global warming. Firstly, it causes many glaciers and polar ice caps to melt because of the increase in temperature. This in turn causes the sea level to rise around the world. In the last century alone, "the seas have risen from about four to ten inches" (qtd. in Reid: 149). It may not sound like a massive impact or change, but it eventually causes a big problem around ... the world. Sea level rise will make the situation worse for low-lying land. For example, this can cause a problem on islands that are located in the middle of the ocean because ... such a sea rise could cause ...

• Word Count: 1408
• Approx Pages: 6
• Grade Level: High School

... is no longer a balance between the amount of carbon dioxide being added to the air and the amount of carbon dioxide being removed. As a result, the concentration of carbon dioxide in the air is steadily increasing. Unfortunately, burning fossil fuels is not the only thing that we humans are doing to increase the amount of carbon dioxide in the atmosphere. In many parts of the world today, forests are being destroyed at ... tropical storm activity. The hurricane season in the Atlantic and Caribbean is expected to start earlier and last longer. Storms will be more severe. Changing wind pa...

• Word Count: 2008
• Approx Pages: 8
• Has Bibliography
• Grade Level: High School

... is no longer a balance between the amount of carbon dioxide being added to the air and the amount of carbon dioxide being removed. As a result, the concentration of carbon dioxide in the air is steadily increasing. Unfortunately, burning fossil fuels is not the only thing that we humans are doing to increase the amount of carbon dioxide in the atmosphere. In many parts of the world today, forests are being destroyed at ... tropical storm activity. The hurricane season in the Atlantic and Caribbean is expected to start earlier and last longer. Storms will be more severe. Changing wind pa...

• Word Count: 2008
• Approx Pages: 8
• Has Bibliography
• Grade Level: High School