The exam assesses biology, chemistry, and physics concepts, including photosynthesis, sound waves, and rock formation. Key topics explore food webs, metal reactivity, light behavior through prisms and filters, and thermal regulation in animals. Investigations examine reaction rates, energy loss, electrical circuits, and motion on slopes. Practical applications evaluate atom structure, gaseous exchange, and heat retention using grouped objects. Questions emphasize experimental design, data analysis, and understanding natural processes and material properties. Keywords: biology, chemistry, physics, STEM education, photosynthesis, food web, metal reactivity, sound waves, thermal regulation, reaction rates, experimental science.