The exam evaluates biology, chemistry, and physics concepts, covering water transport in plants, heat transfer, fetal development, and asteroid impacts. Key topics include the carbon cycle, natural selection, sound wave interactions, and reactivity in the Periodic Table. Investigations assess crystal formation, reaction rates, and floating versus sinking based on density. Practical applications involve analyzing graphs, understanding ionic compounds, and designing electrical circuits. Keywords: biology, chemistry, physics, STEM education, water transport, carbon cycle, natural selection, sound waves, reactivity, experimental science, density, crystal formation, energy transfer.