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answer -:1. when disturbance occurs in an energy - rich system that has formed highly complex food chains , it is more likely to collapse the trophic structure than in simpler system. This is a very important fact when considering where anthropogenic disturbances should occur.
answer -:2. Because it is treatment without chemical medicine and it is very beneficial for our body.
answer -:3. Factors that lead to headaches maybe: emotional such as stress ,depression, or anxiety . medical such as migraine or high blood pressure.
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