People drink water that has been contaminated with animal feces.
Explanation:
Microorganisms producing Infections that characteristically are waterborne prominently incorporate bacteria and protozoa, several of which are internal parasitoids or penetrate the muscles or circulatory order by cliffs of the digestive stretch.
Several other waterborne Infections are affected by viruses.
Waterborne diseases main cause is:
Dust & Infection by Animals - Bacteria, parasitic and viruses organisms undetectably pollute the water and generate illness.
Horses allowed Native Americans to travel to find food and other supplies. Horses also helped strengthen military power. Horses were not the only animals making a large impact on the Americas.
