Question

Untreated human excreta are a threat to health.

Answer 1

Answer:because untreated human excreta produces many diseases causing bacteria

Explanation:

Answer 2

Answer:Untreated human excreata is a threat to health. It causes pollution of soil and water including the underground water. Thus, it contaminates the sources of water from which people collect water for drinking and household purposes. When this contaminated water is used for drinking, it can cause disease such as cholera,typhoid, hepatitis, dysentery etc which may lead to death.