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IB Biology 2025 syllabus guides — IA, EE, Paper 1/2, HL & SL strategies
What examiners actually want when an IB Biology question says "state" vs "explain" vs "discuss" vs "evaluate". Command-term decoder with 2025 mark-scheme signals and worked Paper 2 examples.
A 30-point checklist for IB Biology IA data collection under the 2025 rubric — the 5×5 minimum, reproducibility, uncertainty, and the mistakes that cap your Data Analysis mark at 3/6.
Which statistical test should your IB Biology IA use? Complete guide to t-test, ANOVA, chi-squared, Pearson, and Spearman with 2025 rubric criteria — what examiners reward and what drops your Data Analysis mark.
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