... words, the pollutants can reach the ground in a wet or dry form. Both forms can harm soil, lakes, plants, buildings and people. Acidic pollutants released by one country can travel hundreds, or even thousands, of kilometres before being deposited. Acid rain is a real problem in Scandinavian countries. A large fraction of it is due to pollution released by other European countries. There ... , emissions from power stations, motor vehicles, and industry do contribute to acid rain. In some parts of Australia, these activities are making rain-water slightly more acidic. Reducing air pollutio...

• Word Count: 2950
• Approx Pages: 12

... today's forests, more primitive species still shaped themselves into tree-like forms--like giant club mosses (today appearing as runners a few inches above the ground), tree ferns, and cycads (link to glossary). But even during that era, as during our own, the limiting condition on forests was the ... moisture. All forested landscapes are wet enough, during at least part of the year, to allow trees to draw moisture to a height above the ground. Why do trees need water? As plants turn sunlight into sugars, through the process of photosynthesis, they use up water. Additional water transpir...

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

... and southern hemispheres, and over the oceans. Confirmation of 20th-century global warming is further substantiated by melting glaciers, decreased snow cover in the northern hemisphere and even warming below ground. In the United States, approximately 6.6 tons (almost 15,000 pounds) of greenhouse gases are emitted per person every year. Most of these emissions, about 82%, are from burning ... on local climate. Extreme temperatures can directly cause the loss of life. Moreover, several serious diseases only appear in warm areas. Finally, warm temperatures can increase air and water poll...

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

... lava. Scientists use the term "magma- for molten rock underground and "lava- for molten rock that breaks through the Earth's surface. In other words, lava is magma above the ground (Encyclopedia Britannica). Volcanoes erupt because of density and pressure that is generated in its bottom. The lower density of the magma (very hot liquid rock found below the Earth's surface ... brakes, and transmissions (World Almanac and Book Of Facts). Another effect on the environment caused by volcanic eruption are volcanic gases. Volcanic gases originated from the magma that remained below ground, and ...

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

... to nine percent lower by the year 2008-2012. The United States agreed to seven percent. This is a great way in starting to save our planet. We can prevent water pollution by not pouring anything into our water line. Many people pour car liquids into the water such as coolant and oil. This will not help our healing of the earth ... up the food chain and harm the earth. Anything we put in our water can come into our drinking water and disrupt our health up as well as the earth. Ground pollution caused by humans is easily preventable as well. Littering has to stop. We need to learn how to ...

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

... so alter the living world that it will be unable to sustain life in the manner that we know."" The problems facing the environment today are vast and diverse. Air pollution and the emission of greenhouse gases are just some of the problems that will reach critical proportions in the coming decades. Since the following Rio Declaration in 1992, which dealt ... of its sovereignty, in that we no longer feel comfortable doing what is best for us and all of our citizens. One of the suggestions that seems to be middle ground between the two sides is to create Canadian targets to reduce greenho...

• Word Count: 2601
• Approx Pages: 10
• Has Bibliography
• Grade Level: Undergraduate