Because they have to grow and harvest their own plants...since they where no market to buy their foods
Is there a picture to go with it?
Level of importance that is because you cannot
Infectious diseases, like cholera, typhoid fever [6] and other diseases gastroenteritis, diarrhea, vomiting, skin and kidney problem are spreading through polluted water [7]. Human health is affected by the direct damage of plants and animal nutrition.
