Edexcel IGCSE Biology 复习笔记 4.2.2 Food Webs
Edexcel IGCSE Biology 复习笔记 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 between organisms with...
Edexcel IGCSE Biology 复习笔记 4.2.1 Trophic Levels & Food Chains
Edexcel IGCSE Biology 复习笔记 4.2.1 Trophic Levels & Food Chains Trophic Levels & Food Chains Trophic levels Trophic levels are used to describe the feeding relationships between or...
Edexcel IGCSE Biology 复习笔记 4.1.4 Abiotic & Biotic Factors
Edexcel IGCSE Biology 复习笔记 4.1.4 Abiotic & Biotic Factors Abiotic & Biotic Factors In Biology, ‘abiotic’ means non-living An abiotic factor is a non-living factor within an envir...
Edexcel IGCSE Biology 复习笔记 4.1.3 Biodiversity
Edexcel IGCSE Biology 复习笔记 4.1.3 Biodiversity Biodiversity Biodiversity is the range and variety of different species of organisms on Earth, or within an ecosystem It considers not only ...
Edexcel IGCSE Biology 复习笔记 4.1.2 Practical: Investigating Population Size
Edexcel IGCSE Biology 复习笔记 4.1.2 Practical: Investigating Population Size Practical: Investigating Population Size Ecology is the branch of biology that studies: The distribution ...
Edexcel IGCSE Biology 复习笔记 4.1.1 Key Terms in Ecology
Edexcel IGCSE Biology 复习笔记 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 an ecosystem and ...
Edexcel IGCSE Biology 复习笔记 3.2.8 Natural Selection
Edexcel IGCSE Biology 复习笔记 3.2.8 Natural Selection Darwin's Theory of Evolution by Natural Selection Charles Darwin proposed the theory of evolution by natural selection He came up with this th...
Edexcel IGCSE Biology 复习笔记 3.2.7 Mutation
Edexcel IGCSE Biology 复习笔记 3.2.7 Mutation Mutations Mutations are rare, random changes that occur in the sequence of DNA bases in a gene or a chromosome Mutations occur continuously As t...
Edexcel IGCSE Biology 复习笔记 3.2.6 Variation
Edexcel IGCSE Biology 复习笔记 3.2.6 Variation Types of Variation Variation is defined as differences between individuals of the same species Variation can be divided into two types dependin...
