Which level of organization is characterized by a group of cells that work together to perform a common function? O organ
tissue
organ system
O organism
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Organ Tissue

Explanation:

A group of cells that work together to perform a common function is called a organ tissue.

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phaneritic textures in which phaner means visible so phaneritic textures are standard of impertinent volcanic rocks. these rocks crystallized gradually under the surface of earth. when the magma cools deliberately then the ores have chance to develop and produce long crystals.

a bird that nests only in a particular tree species.