Fechar
Explain how human population growth has occurred.
Explain why raw materials are rapidly being used up and more waste is being produced.
Describe the effects of population growth on land and resources.
Describe how pesticides and herbicides can pollute the land.
Describe what happens when water is polluted by fertilisers.
Describe how acid rain is formed.
Describe some of the effects of acid rain on living organisms.
Define ‘deforestation’
Describe ways in which deforestation affects the carbon dioxide levels in the atmosphere.
Describe ways in which deforestation affects the methane levels in the atmosphere.
Describe the impact of deforestation on biodiversity.
Explain why the use of peat-free compost should be encouraged.
Describe what is meant by the ‘greenhouse effect’.
Describe how increasing levels of carbon dioxide and methane contribute to global warming.
Describe some of the consequences of global warming.
Describe how yeast can produce ethanol for fuel.
Describe the advantages and disadvantages of using ethanol-based fuels.
Explain how biogas is produced in a generator.
Evaluate the advantages and disadvantages of given designs of biogas generator.
Explain why reducing the number of stages in a food chain makes food production more efficient.
Describe ways in which energy losses by animals can be reduced.
Explain the need for increased food production.
Describe ways in which fish stocks can be maintained.
Describe the production of mycoprotein.
Features of a fermenter ensure max growth of fusarium:
