Exchanging oxygen and carbondioxide between air and lungs because it just involves breathing system but everything else involves hormones.........
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Answer: Cells typically receive signals in chemical form via various signaling molecules.
The rhythmic contractions of the stomach and food along the alimentary canal is called peristalsis
They waxy cuticle<span> keeps water inside the </span>leaf<span> cells. Tis water is then used for photosynthesis. ... Suggest a way in which the stoma and guard cells arrangement might </span>work<span> to control the amount of water that is leaving the </span>leaf<span>. The guard cells regulate the opening and closing of the </span>stomata<span>.</span>
