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You can jog along the roads and countryside picking up litter, and you could also manually plant trees and other native vegetation in areas of sparse plant life to restore the habitat. You can volunteer with various programs dedicated to caring for the wildlife in an area. many of the volunteer programs require physical work to be done.
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Peristalsis is also part of mechanical digestion. This refers to involuntary contractions and relaxations of the muscles of your esophagus, stomach, and intestines to break down food and move it through your digestive system.
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