<span>Mark suffers mostly from bipolar depression, due to the observation of the situation that he had. Bipolar depression is the state where the patient has mood disorder that causes rapid changes in the emotional state of the person. This causes the person to experience mania and even crippling depression.</span>
<span>Surplus food contributed to rise of society because the crops made farmers heve more energy and do Job specialization(building cities, etc)</span>
Answer:
also known as the "New Stone Age"), the final division of the Stone Age, began about 12,000 years ago when the first developments of farming appeared in the Epipalaeolithic Near East, and later in other parts of the world.
Explanation:
I'm not an expert on this but I'm speculating "fracking"
Which uses high water pressure to extract the coal.
