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External signals,such as hormones and growth factors,can stimulate a cell to go through the cell cycle.
Grasses
Plants belonging to the family Poaceae, characterized by narrow leaves growing from the base.
Savanna
Tropical biome dominated by grasses with a few scattered shrubs and trees.
Freshwater
Bodies of water that have a low concentration of salt, such as lakes, rivers, and streams, crucial for the survival of many ecosystems.
Estuary
A highly productive ecosystem where nutrient-rich water from a river mixes with seawater.
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