Edexcel IGCSE Biology: Double Science 復習筆記 4.3.1 Water Cycle & Carbon Cycle The Water Cycle Water molecules move between various locations – such as rivers, oceans and the atmosphere...
Edexcel IGCSE Biology: Double Science 復習筆記 4.2.3 Food Pyramids & Transfer of Energy Food Pyramids A pyramid of numbers shows?how many organisms?we are talking about at each level of ...
Edexcel IGCSE Biology: Double Science 復習筆記 4.2.2 Food Webs Food Webs A?food web?is a network of interconnected food chains Food webs are more realistic ways of showing connections betwee...
Edexcel IGCSE Biology: Double Science 復習筆記 4.2.1 Trophic Levels & Food Chains Trophic Levels & Food Chains Trophic levels Trophic levels are used to describe the?feeding relation...
Edexcel IGCSE Biology: Double Science 復習筆記 Abiotic & Biotic Factors In Biology, ‘abiotic’ means non-living An?abiotic?factor is a?non-living?factor within an environment such as temperature...
Edexcel IGCSE Biology: Double Science 復習筆記 4.1.2 Practical: Investigating Population Size Practical: Investigating Population Size Ecology?is the branch of biology that studies: T...
Edexcel IGCSE Biology: Double Science 復習筆記 4.1.1 Key Terms in Ecology Key Terms in Ecology There are several key terms that we use when referring to the various different components of a...
Edexcel IGCSE Biology: Double Science 復習筆記 3.2.7 Natural Selection Darwin's Theory of Evolution by Natural Selection Charles Darwin proposed the?theory of evolution by natural sel...
Edexcel IGCSE Biology: Double Science 復習筆記 3.2.6 Mutation Mutations Mutations are?rare,?random changes?that occur in the?sequence of DNA bases?in a gene or a chromosome Mutations occur?c...
