Edexcel IGCSE Biology 复习笔记 4.3.2 The Nitrogen Cycle
Edexcel IGCSE Biology 复习笔记 4.3.2 The Nitrogen Cycle The Nitrogen Cycle Nitrogen as an element is required to make proteins Neither plants nor animals can absorb it from the air as N2 gas...
Edexcel IGCSE Biology 复习笔记 4.3.1 Water Cycle & Carbon Cycle
Edexcel IGCSE Biology 复习笔记 4.3.1 Water Cycle & Carbon Cycle The Water Cycle Water molecules move between various locations – such as rivers, oceans and the atmosphere – by specific p...
Edexcel IGCSE Biology 复习笔记 4.2.3 Food Pyramids & Transfer of Energy
Edexcel IGCSE Biology 复习笔记 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 a food chain. Th...
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 ...
