Uhh where’s the context i don’t understand how you want me to answer your question
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Explanation:Sometimes memories of loss or of a lost loved one may light up the reward receptors in the brain. This means that moving on or “letting go” can be much more difficult.
The circulatory system is very useful. This system transports the food nutrients, and oxygen to the body cells. It also delivers of carbon dioxide and waste products. This helps the respiratory system by transporting nutrients to keep the lungs clean, and healthy.
Answer:
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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