1. Full coverage of biology, chemistry, and physics — 50 marks — 45 minutes — Cambridge Lower Secondary Checkpoint Science Paper 2 (0893/02) — October 2024 2. Core topics: variation and inheritance, tectonic plate evidence, atomic structure and bonding (MgO ionic), electrical circuits and current hypothesis, black rhino population decline, reactivity series and displacement reactions 3. Sound wave properties: waveform interaction, amplitude, loudness relation — modeled graphs and interpretations 4. Carbon cycle: respiration, feeding, decomposition, combustion — human impact on carbon release — process matching, CO₂ release count, photosynthesis role 5. Practical and analytical skills: building data tables from notes, graph plotting (volume vs. time), prediction interpolation, safety hazard identification, validity and reasoning 6. Real-life context: fetal development and nutrition, photosynthesis equation and energy source, heat transfer (convection demonstration with candle and tubes), conservation of energy, dissipated energy calculation