Question

Which piece of evidence explains that open defecation is a major contributor in contaminating water?Question 1 options:Moreover, pollution from open defecation is further complicated by contamination from natural disasters such as constant floods.In a disturbing study, 75 percent of drinking water samples from schools in Nepal were contaminated with fecal bacteria.Almost 1 billion people worldwide still practice open defecation rather than using a toilet.This is the practice of using fields, forests, lakes, rivers or other natural, open areas to deposit feces.

Answer 1

A study that found 75 percent of drinking water samples from schools in Nepal were contaminated with fecal bacteria provides evidence that open defecation significantly contributes to water contamination and the spread of waterborne diseases.

Step-by-step explanation:

The piece of evidence that explains that open defecation is a major contributor to contaminating water is the disturbing study which found that 75 percent of drinking water samples from schools in Nepal were contaminated with fecal bacteria. This indicates a direct link between open defecation practices and the presence of pathogens in water, leading to the spread of waterborne diseases. Open defecation, wherein people use open areas such as fields, forests, and water bodies to relieve themselves, can lead to fecal matter entering water sources, especially during floods and natural disasters. This results in contamination of the water with pathogens, thereby posing a threat to public health by increasing the risk of diarrheal diseases and other illnesses related to fecal-oral transmission.

Pathogens such as bacteria, viruses, and protozoa from fecal matter can enter groundwater and surface water, leading to the spread of diseases like typhoid, cholera, and diarrhea. In areas with inadequate sanitation facilities, this is a significant cause of illness and death, especially among children in developing countries. Provision of adequate sanitation and access to safe drinking water can significantly reduce the spread of these diseases.

Answer 2

Between the options the one that is a evidence explaining why open defecation is a major contributor in contaminating water is:

In a disturbing study, 75 percent of drinking water samples from schools in Nepal were contaminated with fecal bacteria.

The alternative point out a study and the consequences of open defecation have in drinking water (microosganisms contamination).