The bronchi (singular: bronchus) are the airways that lead from the trachea into the lungs, and then branch into smaller bronchioles. Structurally, the bronchi are made up of cartilage that gives them stability and prevents their collapse.
Answer:
DNA checking
2.after few days it's growth rate was so great
Respond to stumuli.I think it will help.
Answer:
To make a new strand of DNA
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