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a tube that carries air into the lungs.
the control of an invasive species using the species' natural enemies (biocontrol agents)...
large spongy organs in which gaseous exchange takes place in vertebrates (with the exception of...
the loss of water vapour from the aerial parts of a plant through stomata or lenticels.
meristem that produces a layer of bark on the outer surface of a plant.
the kingdom of multicellular organisms that contain chlorophyll and make their own food by...