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Card 6

Front

A toxic substance used to destroy unwanted vegetation

Back

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Card 7

Front

The process by which the Earth is kept warm, by the greenhouse gases reflecting heat back to Earth

Back

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Card 8

Front

The increase in the average temperature on Earth due to a rise in the levels of greenhouse gases in the atmosphere

Back

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Card 9

Front

The storage of a substance in a solid material through biological or physical processes (e.g carbon dioxide from the air in bodies of water)

Back

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Card 10

Front

The destruction of forests by cutting down large areas of trees

Back

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Card 11

Front

The variety among living organisms and the ecosystems in which they live

Back

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Card 12

Front

A partially decayed vegetation used for fuel and fertiliser by gardeners

Back

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Card 13

Front

Fuel obtained from biomass

Back

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Card 14

Front

The conversion of sugar to alcohol and carbon dioxide using yeast

Back

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Card 15

Front

Fuel produced from the anaerobic decomposition of organic waste

Back

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