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  •  Environmental Studies Factsheet: 134 Range of Tolerance

    Environmental Studies Factsheet: 134 Range of Tolerance

    This Factsheet: • Explains the concept of the Range of Tolerance • Reviews recent exam questions on this topic...

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  •  Environmental Studies Factsheet: 135 GM salmom

    Environmental Studies Factsheet: 135 GM salmom

    A US company has produced genetically-modified (GM) salmon eggs that it claims develop into salmon that grow twice as fast as non-GM salmon. It hopes that fish farms buying these eggs will be able ...

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  •  Environmental Studies Factsheet: 136 Wetlands for lapwings

    Environmental Studies Factsheet: 136 Wetlands for lapwings

    This Factsheet: • Explains why land drainage has harmed some bird populations • Describes investigations to improve wetland habitats for lapwings • Illustrates the type of exam quest...

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  •  Environmental Studies Factsheet: 137 Japans Nuclear Crisis

    Environmental Studies Factsheet: 137 Japans Nuclear Crisis

    In March 2011, an enormously powerful earthquake (Richter scale 9.0) hit Japan. The epicentre was 81 miles off the east coast at a depth of 15.2 miles....

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  •  Environmental Studies Factsheet: 138 Habitats Grazing

    Environmental Studies Factsheet: 138 Habitats Grazing

    Grazing is an important technique for maintaining certain valuable habitats and landscapes for maintaining biodiversity. This Factsheet:   • Summarises the effects of grazing• Illustr...

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  •  Environmental Studies Factsheet: 139 Managing Radon

    Environmental Studies Factsheet: 139 Managing Radon

      Radon-222 (222Rn) is a naturally occurring radioactive gas. Rocks such as granite contain isotopes of uranium that decay to form radon gas. The radon then diffuses through fissures in th...

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  •  Environmental Studies Factsheet: 140 Ecological impacts of reintroducing wolves

    Environmental Studies Factsheet: 140 Ecological impacts of reintroducing wolves

    Almost immediately the population of elk started to increase. Although the elk were still preyed upon by black and grizzly bears and cougars, the removal of the wolves was a huge reduction in preda...

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  •  Environmental Studies Factsheet: 141 DDT Ban

    Environmental Studies Factsheet: 141 DDT Ban

    DDT is a persistent organic pesticide previously widely used in agriculture. Although it is now banned in most developed countries it is still used in many LEDCs to prevent insect-borne disease....

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  •  Environmental Studies Factsheet: 142. The Living Planet Index

    Environmental Studies Factsheet: 142. The Living Planet Index

    WWF (the Worldwide Fund for Nature) has published Living Planet Reports annually since 1998. The report describes the changing state of global biodiversity. One of the two indicators in the report is ...

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  •  Environmental Studies Factsheet: 143. - Shale gas and earthquakes!

    Environmental Studies Factsheet: 143. - Shale gas and earthquakes!

    This Factsheet:• Describes the nature of shale gas• Explains the process and environmental impacts of fracking• Uses shale gas drilling near Blackpool as a Case Study...

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