The exam paper assesses core scientific concepts, including food chains, the water cycle, planetary mass and weight relationships, sedimentary processes, physical changes, light refraction, and defense mechanisms in living organisms. Emphasis is placed on energy transfer, environmental effects like biomagnification, properties of gases, boiling and evaporation distinctions, and practical safety in experiments. Skills tested include data interpretation, critical analysis, diagram completion, and experimental design. Keywords: food web, bioaccumulation, boiling point, planetary gravity, sedimentation, metamorphism, light refraction, safety precautions, physical and chemical changes, immune response.