Describe how different factors Practical 4.3; Homework affect the rate of decay. Technician’s notes worksheet Explain extracellular digestion. 4.3 Homework quiz 3/4 4.4 Key concept: Learning Describe what an ecosystem is. B4.1e Worksheets 4.4.1, Quick starter about ecosystems Explain the importance of high 4.4.2 and 4.4.3 Homework biodiversity. worksheet Explain what is meant by a Homework quiz ecosystem. Slideshow Video 3/4 4.5 Changing abiotic factors Explain how abiotic and biotic B4.1f Worksheets 4.5.1, Quick starter factors can affect communities. 4.5.2 and 4.5.3; Homework Explain changes in the distribution Practical sheets worksheet of species in an ecosystem. 4.5.1 and 4.5.2; Homework quiz Describe stable and unstable Technician’s notes Slideshow populations. 4.5 3/4 4.6 Investigating Describe how changes in one B4.1g; BM4.1v Worksheets 4.6.1 Quick starter relationships population affect another. and 4.6.2; Practical Homework Explain interdependent sheet 4.6; worksheet relationships. Technician’s notes Homework quiz Explain how predator–prey 4.6 population cycles have cyclical changes. 5/6 4.7 Competing for resources Describe how competition impacts B4.1g Worksheets 4.7.1, starter on populations. 4.7.2 and 4.7.3 Homework Explain why animals in the same worksheet habitat are in competition. Homework quiz Explain interspecific and Slideshow intraspecific competition. 5/6 4.8 Looking at trophic levels Explain trophic levels. B4.1h Worksheets 4.8.1, starter Explain and construct pyramids of 4.8.2 and 4.8.3 Homework biomass. worksheet Explain the difficulties in Homework quiz constructing pyramids.
Describe how different factors affect the rate of decay. Explain extracellular digestion. Practical 4.3; Technician’s notes 4.3 Homework worksheet Homework quiz 3/4 4.4 Key concept: Learning about ecosystems Describe what an ecosystem is. Explain the importance of high biodiversity. Explain what is meant by a ecosystem. B4.1e Worksheets 4.4.1, 4.4.2 and 4.4.3 Quick starter Homework worksheet Homework quiz Slideshow Video 3/4 4.5 Changing abiotic factors Explain how abiotic and biotic factors can affect communities. Explain changes in the distribution of species in an ecosystem. Describe stable and unstable populations. B4.1f Worksheets 4.5.1, 4.5.2 and 4.5.3; Practical sheets 4.5.1 and 4.5.2; Technician’s notes 4.5 Quick starter Homework worksheet Homework quiz Slideshow 3/4 4.6 Investigating relationships Describe how changes in one population affect another. Explain interdependent relationships. Explain how predator–prey population cycles have cyclical changes. B4.1g; BM4.1v Worksheets 4.6.1 and 4.6.2; Practical sheet 4.6; Technician’s notes 4.6 Quick starter Homework worksheet Homework quiz 5/6 4.7 Competing for resources Describe how competition impacts on populations. Explain why animals in the same habitat are in competition. Explain interspecific and intraspecific competition. B4.1g Worksheets 4.7.1, 4.7.2 and 4.7.3 starter Homework worksheet Homework quiz Slideshow 5/6 4.8 Looking at trophic levels Explain trophic levels. Explain and construct pyramids of biomass. Explain the difficulties in constructing pyramids. B4.1h Worksheets 4.8.1, 4.8.2 and 4.8.3 starter Homework worksheet Homework quiz
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