Every Topic Mastery Pack for Edexcel GCSE Combined Science (9-1) Biology CB9 Ecosystems and Material Cycles: 9 complete revision packs, each with a Topic Mastery Sheet, a Student Exam Practice Sheet and a full answer key.

Bought separately: £44.91. Bundle price: £31.50.

PACKS INCLUDED

• CB9a Ecosystems: Individual, population, community and ecosystem, interdependence and food webs, estimating population size with quadrats
• CB9b Abiotic Factors and Communities: Temperature, light, water and pollutants, measuring abiotic factors, Core Practical: quadrats and belt transects, interpreting distribution data
• CB9c Biotic Factors and Communities: Competition, predation and predator-prey cycles, how a top predator can change a whole community
• CB9d Parasitism and Mutualism: Parasites and hosts, mutualistic partners, using examples to explain relationships
• CB9e Biodiversity and Humans: Fish farming, non-indigenous species, eutrophication step by step
• CB9f Preserving Biodiversity: Why local and global biodiversity matter, conserving animal species, the impact of reforestation
• CB9g The Water Cycle: How materials cycle, evaporation, transpiration, condensation and precipitation, potable water and desalination in areas of drought
• CB9h The Carbon Cycle: Photosynthesis, respiration, feeding and combustion, decomposers and decay
• CB9i The Nitrogen Cycle: Why plants need nitrates, the role of bacteria, fertilisers, manure and crop rotation

EVERY PACK INCLUDES

• Topic Mastery Sheet (PDF) covering each specification point, with exam tips, a key vocabulary table, common errors corrected and a Grade 8-9 stretch section
• Student Exam Practice Sheet (PDF + editable Word) with 5 or 6 exam-style questions (17 to 21 marks) that build from short-answer items to extended questions
• Teacher answer key (PDF + editable Word) with tick-point marking, checked against Edexcel and Pearson mark schemes wherever an equivalent item exists
• Specification point references, plus original diagrams, graphs and real data where the topic needs them

Written for Edexcel GCSE Combined Science (1SC0); points that appear only in the separate GCSE Biology specification are not included.

Questions are written to match the Edexcel specification; some are adapted from past Edexcel papers, and the answer key shows the source of each mark scheme. This resource is not endorsed by or affiliated with Pearson Edexcel.