This combined science exam paper covers biology, chemistry, and physics topics. It assesses concepts such as population sampling, fractional distillation, photosynthesis, and group reactivity in the periodic table. Questions require data interpretation, experimental design, and calculations related to rates, momentum, and energy use. Practical contexts include the environmental impact of materials, investigation of physical properties, and global temperature change. The exam emphasizes problem-solving, scientific reasoning, and application of theory to real-world scenarios. Total marks: 75.