... dissipates into the air. Propane costs depend on many factors. Lately the cost is around $1.50 or so. But it depends on where you are getting it from and what season it is. With colder seasons the price may be lowered because so many people are buying it to heat their houses, yet in the summer the cost may be higher ... depends on the common law of supply and demand. Yet when there is a lot of farmers needing the propane, like in a drought, the cost may be higher depending on what season this happens during. There are three types of storage for propane inventories: primary, secondary, a...

• Word Count: 678
• Approx Pages: 3
• Grade Level: High School

... largely growing demand for products and the conversion of 'forest to agriculture'. In 1750, 6-7% of cropland and pastureland occupied the Earth's surface; by 1990 it has increased to 35-39%. 13 million hectares, which is equivalent to the size of the country Portugal, is estimated to be lost each year due to deforestation. Deforestation is a particular concern in areas such ... ...

• Word Count: 1066
• Approx Pages: 4
• Grade Level: Undergraduate

... data was compiled in the following table and graphs:     % concentration % seeds germinated # of Flowers produced # leaves Stem Height 0 88 2.84 5.6 10.14 0.045 75 5 5.5 17.25 0.09 87.5 1.57 3.14 6.39 0.18 75 2.4 7.7 7.48 0.37 50 1 6 9.15 0.75 25 3.5 6 12 1.5 37.5 0 4 2.45 3 0 0 0 0 6 0 0 0 0     Discussion The results support the hypothesis that a small amount of salt in soil will not have a negative effect on ... ...

• Word Count: 713
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• Has Bibliography
• Grade Level: High School

... with flooding. In 1997,160 nations reached an agreement concerning the use of fossil fuels and the emission of CO into the earths atmosphere. Called the Kyoto Protocol, it required 39 industrial nations to limit their annual emissions to an average of 7 percentage points over the course of four years. Many of these nations were influenced by large businesses and corporations ... ...

• Word Count: 575
• Approx Pages: 2
• Grade Level: High School

... these natural disasters has contributed greatly to the worlds cost cost of global warming. Each year natural disasters cause billions in damage but even slight increases in average temperature for a season amounts to great cost. The economic impact of global warming is costing the world more then 1.2 trillion dollars a year and consequently decreases the world GDP 1.6% annually and the impact is ... ...

• Word Count: 1026
• Approx Pages: 4
• Has Bibliography
• Grade Level: Undergraduate

... -already use carbon dioxide so efficiently that higher levels are un-likely to help. Higher temperatures will mean higher crop yields in some northern areas. For example, the fruit-growing season around the Great Lakes may be longer (Field et al. 2007). However, in other parts of the country, the effects of climate change on agriculture will be predominantly nega-tive ... ...

• Word Count: 1025
• Approx Pages: 4
• Grade Level: Undergraduate

For the past few years, environmentally sustainable sources of energy and fuel have been at the forefront of the media and minds of Americans more than ever before. Going green seemed to be a globally inevitable trend. But even with funding for green energy increasing and one of the most persistent promoters of information on global warming (Nobel Prize recipient Al Gore) reaching celebrity status, we are seeing a startling net increase in the emissions of the greenhouse gas Carbon Dioxide and a revitalized political commitment to dependence on oil, foreign and otherwise. Scary Science We are ...

• Word Count: 706
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• Has Bibliography
• Grade Level: Undergraduate

... them to float. Despite all these ways of catching light algae species still have to compete for space to best catch light. In the ocean, temperature ranges depend on the season and depth of the water. Usually as the latitude increases the surface temperature decreases. A lot of organisms are able to adapt to temperatures changes but most sudden ones that change ... ...

• Word Count: 461
• Approx Pages: 2
• Grade Level: High School

... over the past several decades. In southern Canada and northern United States, the ratio of snow to rain has decreased, while, farther south where snow is intermittent during the cold season, the average snowfall has tended to diminish as the climate warms (Patz, 31). There is the possibility that a warmer world could lead to more frequent and intense storms, including hurricanes ... ...

• Word Count: 1142
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• Has Bibliography