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plant
Vegetable rooted in the soil, the upper part of which grows aboveground or in freshwater; it produces oxygen and is at the bottom of the food chain.
germination
Phenomenon by which, given favorable conditions, a seed will develop and grow into a plant.
soil profile
Soil usually has four main layers; it varies in total thickness from several centimeters to several meters, depending on the area.
photosynthesis
Phenomenon by which the plant, helped by solar energy, obtains its food (glucose) from the air and the soil and releases oxygen into the atmosphere.
