More cards in this set

Card 16

Front

Describe how biogas production is affected by temperature.

Back

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Card 17

Front

If biogas contains more than 50% methane, what can we do?

Back

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Card 18

Front

If biogas contains less than 10% methane, what can happen?

Back

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Card 19

Front

What is biogas a 'cleaner' fuel than? Why? What is the disadvantage of biogas?

Back

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Card 20

Front

What are the two different methods of transferring energy from biomass?

Back

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Card 21

Front

Give three advantage of using biofuels.

Back

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Card 22

Front

Under what circumstances does the burning of biofuels does not cause a net increase in greenhouse gas levels?

Back

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Card 23

Front

In some areas, what is the use of large areas of land to produce biofuels resulting in? (2)

Back

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