The abiotic factor which determines how high barnacles can live in the middle intertidal zone is exposure to air. The two biotic factors which determine how low they can live are competition with other creatures for living space and the threat of predators.
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Answer:
The abiotic factor which determines how high barnacles can live in the middle intertidal zone is exposure to air. The two biotic factors which determine how low they can live are competition with other creatures for living space and the threat of predators.
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