1) What is the process by which plants make their own food? a) Respiration b) Photosynthesis c) Digestion d) Fermentation 2) Which part of the cell is known as the "powerhouse"? a) Nucleus b) Mitochondria c) Cell wall d) Ribosome 3) What do we call the path that planets take around the Sun? a) Orbit b) Rotation c) Revolution d) Cycle 4) Which organ in the human body is responsible for pumping blood? a) Brain b) Lungs c) Heart d) Liver 5) Which stage of the water cycle involves water turning into vapor? a) Collection b) Condensation c) Evaporation d) Precipitation

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