... the beginning, trees have furnished us with food and many cultural necessities such as shelter, medicine, clothing, tools, heat in the winter and cool shade in the summer. Their beauty adds seasonal character to the landscape and a serene refuge from the demands of daily living. Australia suffers greatly from salinity and rapidly rising water tables. The primary cause of dry land salinity ... two years of 1954 and 1955, an extensive search from California to Colorado was carried out by Dr. Schulman and his assistant C.W. Ferguson. They found the oldest trees at elevations of 10,000 to 1...

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

... ecological landslide a vicious circular feedback that is becoming stronger and stronger, and is doing so more quickly with every passing summer. Since these gases released are known to be green house gases, global temperature will continue to increase. However, to pass the tipping point to have a complete permafrost meltdown will require an estimated >9 °C of surface warming, which would only be reached this ... high light conditions. If the situations causing this bleaching process are sustained for a long while, the coral host will die. Hoegh-Guldberg, 2004 Showed that projections of...

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

... million years. As oceans warm and glaciers melt, land and cities along coasts may be flooded. Heat and drought may cause forests to die and food crops to fail. Global warming will affect weather everywhere, plants and animals everywhere, people everywhere; humans are warming the earth's atmosphere by burning ... and turning it up in the summer. Or better yet, try using fans instead of air conditioning in the summer months. You can help some energy by recycling paper, glass, plastic, and aluminum-it takes energy to make all of these products. When it comes to energy conservation, little ...

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

... million years. As oceans warm and glaciers melt, land and cities along coasts may be flooded. Heat and drought may cause forests to die and food crops to fail. Global warming will affect weather everywhere, plants and animals everywhere, people everywhere; humans are warming the earth's atmosphere by burning ... and turning it up in the summer. Or better yet, try using fans instead of air conditioning in the summer months. You can help some energy by recycling paper, glass, plastic, and aluminum-it takes energy to make all of these products. When it comes to energy conservation, little ...

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

... . This may have caused death in many animal species and changed the life of many peoples. Now, thousands of years later, the earth is starting to heat up again. This may be from car exhaust, factory fumes and the cutting down of rain forests. This might cause many problems for our planet ... levels that might eventually cover entire islands. Other consequences of global warming could be less drinking water on those now even hotter summer days, and entire species of animals could die out. Many people in the city wake up in the morning and drive for half an hour or so on the traffic ... ca...

• Word Count: 396
• Approx Pages: 2
• Grade Level: High School

... young fish have difficulty staying alive, and the older fish will die of suffocation. At a pH level of 5, the whole fish population will die off. A pH level of 4.0 will cause all life forms in that area of the lake or stream to die off. Fish, being one of the most important members of ... its way into larger water bodies. This causes a sudden drastic change in the pH level of the water. The aquatic ecosystem has no time to adjust to the drastic change in levels. This happens during a time when many of the aquatic life forms are reproducing. The sudden change in the ... start using othe...

• Word Count: 1341
• Approx Pages: 5
• Has Bibliography
• Grade Level: High School

... rain. Any precipitation that has a pH value of less than 5.6 is considered to be acid precipitation. Readings of pH 2.4--as acidic as vinegar--were recorded during storms in New England. During one particularly acid summer storm, rain falling on a lime-green automobile leached away the yellow in the green ... acid in water can affect the fish in the water in two ways: directly and indirectly. Sulfuric acid directly interferes with the fish's ability to take in salt, oxygen and nutrients crucial for daily life. Osmoregulation is the process of maintaining the delicate balance of salts an...

• Word Count: 1344
• Approx Pages: 5
• Has Bibliography
• Grade Level: High School

... ño has unleashed hurricanes and droughts; the greenhouse effect is blamed for rising temperatures; and the thinning of the ozone layer might lead to an increase in skin cancer among humans" ("Today's Science: Global Warming and Ozone Hole Linked "). Frequent heat waves, irregular weather patterns, ... with extinction, and salmon would become endangered" ("Causes of Endangerment"). Once the amount of fish starts to decrease, then birds that depend on those fish will also start to die out. What really causes irregular weather patterns and extinction of animals? The primary cause is the emi...

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

... years on record, with 2002 the second hottest ever recorded, and 1998 the hottest. Drought and wildfire, warmer temperatures can also increase the probability of drought. Greater evaporation, particularly during summer and fall, could exacerbate drought conditions and increase the risk of wildfires. Deadly heat waves and the spread of disease more frequent and more intensive heat waves could result in ... more heat-related deaths. These conditions could also aggravate local air quality problems, already afflicting more than 80 million Americans. Global warming is expected to increase the...

• Word Count: 1457
• Approx Pages: 6