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Refraction is the deflection or bending of electromagnetic waves when they pass from one kind of transparent medium into another.
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Mercury occurs naturally in the environment and exists in several forms. These forms can be organized under three headings: metallic mercury (also known as elemental mercury), inorganic mercury, and organic mercury.
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Energy/Transportation
Mercury
Frank Ackerman is the Director of the Research and Policy Program at the Global Development and Environment Institute at Tufts University . He received a Ph.D. in Economics from Harvard University and a B.A. in Mathematics and Economics from Swarthmore College.
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Green Living
Recycling
Our climate varies regionally, and the temperature and precipitation tend to be influenced by local geographical characters such as latitude, altitude, distance from the coast , nearby ocean currents , prevailing winds , mountain ranges and vegetation.
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Environment
Climate Change
Nematomorphs are often referred to as “horsehair worms” as these worms are very long and thin without a distinct head. Until the late 1800’s it was believed that these worms were shed into the water from horse’s manes and tails.
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Helium is a very small and extremely light gaseous element. It is odorless and tasteless. It is the least reactive of all elements: that is, it is inert and is not known to react with any other element or ion .
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Ian Hore-Lacy is Director for Public Communications at the World Nuclear Association , an international trade association based in London, and also Director Uranium Information , part of the Australian Uranium Association, a position he has held since 1995. His function with ...
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During late spring in the Sonoran Desert, the white flowers of Saguaro (Carnegiea gigantea) cacti bloom for just one evening to attract Lesser Long-nosed Bats (Leptonycteris curasoae yerbabuena) and Mexican Long-tongued Bats (Choeronycteris mexicana) for pollination.
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A keystone species is a species that exerts an impact on its community that is both strong and disproportionate to its abundance.
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What image comes to mind when you hear the term “old growth”? To many it describes a forest that has grown for centuries without human disturbance and now is a stand of massive, towering trees with jumbles of large decaying tree trunks; deep shade pierced by shafts of sunlight; and dense ...
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Desertification is the persistent degradation of dryland ecosystems by variations in climate and human activities. Home to a third of the human population in 2000, drylands occupy nearly half of Earth’s land area.
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Salt marshes are coastal wetlands found throughout the world on protected shorelines and on the edges of estuaries where freshwater mixes with seawater.
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Mr. Sudheer Kumar Shukla is senior research scholar of Department of Paper Technology, of India’s premier technological institution; Indian Institute of Technology (IIT) in Roorkee. He holds two master degrees in Environment; M. Sc. in Environmental Biology and M. Tech. ...
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Poaching is the illegal hunting, killing or capturing of animals. This can occur in a variety of ways. Poaching can refer to the failure to comply with regulations for legal harvest, resulting in the illegal taking of wildlife that would otherwise be allowable.
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Marine reserves are areas in the ocean where no extractive activities are allowed. They are also often called ‘no-take zones’, since the killing, harming, or harassing of any plants or animals within the reserve boundaries is not allowed.
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To look at a Snapping turtle with its horny shell and scaley tail, you might imagine that you are glimpsing a dinosaur. In fact, turtles are even older than dinosaurs and were common on earth 50 million years before the first dinosaurs appeared.
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The rock cycle is a general model that describes how various geological processes create, modify, and influence rocks (Figure 1). This model suggests that the origin of all rocks can be ultimately traced back to the solidification of molten magma.
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