This revision guide has been designed and written to cover the International Edexcel GCSE Biology course.
It is part three of a five-part series that will cover the entire International Edexcel GCSE Biology course. Part four covers “Ecology and the environment” specification points 4.1-4.18.
Covered topics:
Population, community, habitat and ecosystem
Biodiversity
Abiotic and Biotic factors
Core practical 12
Core practical 13 (Paper 2)
Food chains
Food webs
Pyramids of number
Pyramids of biomass
Pyramids of energy transfer
Percentage efficiency of energy transfer
Carbon cycle
Nitrogen cycle
Air pollution- Sulfur dioxide
Air pollution – Carbon monoxide
Greenhouse gases
Greenhouse effect
Consequences of global warming
Water pollution
Eutrophication
Deforestation