... coast of Puerto Rico, and from the boreal forests of the far north to the tropical rainforests of the Amazon. The conditions in these environments are all very different, but certain species of trees have adapted a level of "fitness" that allow them to live there. Trees are the oldest and largest living things on the earth, and they are a good measure of the health and quality of our environment ... . Trees are the original multi-taskers. Trees provide social, ecological, and economic benefits. Their beauty inspires writers and artists, while their leaves and ... roots clean the air we b...

• Word Count: 2774
• Approx Pages: 11
• Grade Level: High School

... , nobody has really counted all of the volcanoes, especially the tens on thousands on the sea floor. In deed, the best guess is 1511 volcanoes have erupted in the last 10,000 years and should be considered active (Simkin & Siebert). These eruptions had contributed in many good ways to our planet Earth. The earth's water and atmosphere are evolved from the gases produced by volcanic eruptions, helping ... to proof human beings life. In addition, another advantage of volcanoes to the environment is to provide nutrients to the surrounding soil. Also, volcanic ash, which is a volcanic rock, ...

• Word Count: 2820
• Approx Pages: 11
• Has Bibliography

... reason for Lovelock's Gaian Theory keeping the Earth balanced. The salinity of the ocean has been maintained at a constant rate of 3.4% for billions of years. It is maintained by the marine life in the ocean, where there are limestone deposits. Salt is then moved back to the land masses by the slow movements of these masses. Atlthough this is a fairly good explanaition for the Gaia Theory, there were people who ... did not believe a word of what Lovelock said. Their argument was if the earth could not reproduce, then it is not alive. They also argued that organsims weren't smart enough ...

• Word Count: 2564
• Approx Pages: 10
• Has Bibliography
• Grade Level: High School

... are at different stages of development. Therefore, the developing and developed countries should not reduce carbon emissions in the same. The earth is our common home. Every country must protect the environment on Earth. Each country should reduce carbon emissions. Mandatory for all countries to have a limit on their greenhouse gas emissions is good for human. We should proceed from the overall situation, to limit greenhouse gas emissions ... . In protecting the environment should not have national boundaries. I have ... ...

• Word Count: 6155
• Approx Pages: 25
• Grade Level: Undergraduate

... . scientists don't know for sure what global warming will bring. Some changes brought about by global warming will be good. If you live in a very cool climate, warmer temperatures might be welcome. Days and nights could be more comfortable and people in the area may be able to grow different and better crops than they could before. But it is also true ... that changes in some places will not be very good at all. Climate change may alter the world's habitats and ecosystems - all living things are included in and rely on these places. Many of these places depend on a delicate balance of ra...

• Word Count: 3240
• Approx Pages: 13
• Grade Level: Undergraduate

... made by those who have made emission restrictions, as the environment is none the better, and the country that had good intentions is now poorer. This scenario is known as "leakage," where industries in emission-restricted countries suffer at the gain of non-complying countries, and thus gives few such exporting countries the incentive to improve the state of the earth. This makes it clear that sub-global abatement ... of emission restrictions will nullify the efforts of those who are working towards greenhouse gas emission control. Though many countries claim to be working towards emis...

• Word Count: 3241
• Approx Pages: 13
• Grade Level: Undergraduate

... , and impaired immune systems. A 1 % decrease in total column ozone causes the amount of transmitted UV radiation, in the spectral region that damages deoxyribonucleic acid (DNA), to increase by about 2 %. Although good ozone only represents a tiny fraction of the atmosphere, it is crucial for life on Earth. The proportion of good and bad ozone in the atmosphere depends on the balance between processes that create ozone and those that destroy ... it. An upset in this balance can have serious consequences for life on Earth, and scientists are finding evidence that the balance has changed....

• Word Count: 2950
• Approx Pages: 12

... increase to human activities including fossil fuel use for energy and deforestation in tropical regions, both of which release CO2 into the atmosphere. Indeed, more than half of the current temperature increase that the earth has experienced this century, occurred before 1940s, but the rapid rise in CO2 levels has mostly come since 1940. Because of this and other reasons, he is skeptical of ... can also be threatened" ("Wind, Water, Sun, or Coal"). If hydropower is not a very good solution to provide electricity, then wind power might be a better solution. The movement of wind produces ...

• Word Count: 3357
• Approx Pages: 13
• Grade Level: High School

... of scientific evidence that refutes this entire theory. The findings of the last 50 years both deny the possibility of Darwin's theory and make a very good case for creationism. Creationism is the belief that all of life came into being suddenly, that it still exists in much the same form, and that the earth is much younger than Darwin thought. The Law of Biogen! esis states that life only ... comes from life. The Harvard University Nobel Prize winner (in physiology and medicine) George Wald wrote(1954 ... be produced!"(Walton,1977). It is far more difficult to believe that this is ran...

• Word Count: 2793
• Approx Pages: 11
• Has Bibliography
• Grade Level: High School