Ecosystem - Living organisms and their environment, Interdependence - Needing each other, Plants - Produce food and oxygen, Photosynthesis - Food producing chemical reaction, Organic molecules - Carbohydrates and protein, Sun - Source of our energy, Respiration - Breakdown of sugar for energy, Carbon dioxide - Gas needed for photosynthesis, Water - Liquid needed for photosynthesis, Pollination - Carried out by bees and butterflies,

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