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Describe the main stages in brewing beer or wine

Describe the advantages of using bio-fuels rather than fossil fuels

How are bio-gas and gasohol produced?

Describe experiments to analyse the composition of soil samples

Why are earthworms important in maintaining the soil structure and fertility>

What are the advantages of living in water?

What are the causes of eutrophication?

Describe the range of enzymes that are used in biological washing powders

How can enzymes be immobilized?

Describe the main stages of genetic engineering