Every cell in the body goes through a life cycle. Cells grow and divide to replace cells that are lost because of normal wear and tear or injury. Different cells grow and die at different rates. Some cells, such as epithelial<span>epithelialA thin layer of epithelial cells that makes up the outer surfaces of the body (the skin) and lines hollow organs, glands and all passages of the respiratory, digestive, reproductive and urinary systems.</span> cells, reproduce quickly. Other cells, like nerve cells, grow slowly. Both normal cells and cancer cells go through a sequence of steps, or phases, when they form new cells. This is called the cell cycle.
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Answer: the ear drum
cochlea
Explanation:
bc They send the sound waves to the inner ear and into the fluid-filled hearing organ (cochlea).
Macromolecules, hope this helps.
Introduced species can harm our planet because in some regions of the world we are not prepared for their type of species, which can all in all cause damage.