They get energy from alge and water-snow, water-snow is dead phytoplankton that there is so many it look like snow. Another way is fish at the top of the ocean have sunlight, sunlight gives energy. But being that sunlight doesn't reach the bottom there are types of coral that can go to 1000 degrees they get energy and warmth from the coral.
Manure contaminates food during its production. Chemicals found in it get absorbed by produce and in turn when you eat it it enters your body and can cause harm and poison you. On the other hand, hair falls in during meal preparations. A hair falls in and can spread bacteria or illnesses to you or anything similar.
