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  •  Environmental Studies Factsheet: 144. Mercury in the Arctic

    Environmental Studies Factsheet: 144. Mercury in the Arctic

    Mercury is released naturally into the environment from volcanoes and from rock weathering. Humans release mercury during mining operations but the biggest human source is coal burning. Human sources ...

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  •  Environmental Studies Factsheet: 145. Desalination or a new reservoir for Melbourne?

    Environmental Studies Factsheet: 145. Desalination or a new reservoir for Melbourne?

    This Factsheet describes the arguments for and against increasing Melbourne’s water supply by desalination or via a new reservoir. Desalination involves extracting salt from seawater to increase...

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  •  Environmental Studies Factsheet: 146. Banning discards in the North Sea

    Environmental Studies Factsheet: 146. Banning discards in the North Sea

    Up to 75% of the fish caught every year in the North Sea are discarded i.e. thrown back dead into the sea. Why?• The fish are below minimum landing size• They are juveniles• They are a ...

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  •  Environmental Studies Factsheet: 147. Aquatic predator-prey relationships

    Environmental Studies Factsheet: 147. Aquatic predator-prey relationships

    Aquatic habitats such as ponds and streams are convenient to study and commonly feature in exam questions. This Factsheet:• Describes the ecological principles behind aquatic predatorpreyrelation...

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  •  Environmental Studies Factsheet: 148. Can we use beetles instead of herbicides?

    Environmental Studies Factsheet: 148. Can we use beetles instead of herbicides?

    Weeds compete with crops for light, water and soil nutrients. Farmers use herbicides – chemicals that kill weeds e.g. 2,4-D – to reduce this competition and increase the yield of their cro...

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  •  Environmental Studies Factsheet: 149. Conservation Case Studies: Frogs

    Environmental Studies Factsheet: 149. Conservation Case Studies: Frogs

    This Factsheet:• Describes the importance of frog conservation• Uses Case Studies of frog conservation studies to illustrate How Science Works...

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  •  Environmental Studies Factsheet: 150. Is Thorium the answer to our energy needs?

    Environmental Studies Factsheet: 150. Is Thorium the answer to our energy needs?

    This Factsheet:• Explains the advantages of thorium over uranium as a nuclear fuel• Describes the technology that is being suggested• Outlines the potential problems facing this new tec...

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  •  Environmental Studies Factsheet: 151. Answering questions on the phosphorus cycle

    Environmental Studies Factsheet: 151. Answering questions on the phosphorus cycle

    Phosphorus is an essential nutrient for both animals and plants. The main source of phosphorus is phosphate-containing rocks. The major use of phosphorus is in agriculture to make animal-feed suppleme...

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  •  Environmental Studies Factsheet: 152. Why conserve bats?

    Environmental Studies Factsheet: 152. Why conserve bats?

    White nose-syndrome (WNS) is a devastating disease caused by the fungus Geomyces destructans that, since 2009, has killed more than 1 million hibernating bats in North America. This has prompted scien...

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  •  Environmental Studies Factsheet: 153.Metal mining returns to the West Country

    Environmental Studies Factsheet: 153.Metal mining returns to the West Country

    Defra have confirmed that Hemerdon mine, north of Plymouth in Devon (Fig.1), is the fourth largest deposit of tungsten in the world. Hemerdon was last mined in WW2 but was uneconomic because the de...

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