NEET BIOLOGY

Detailed explanation-1: -Since E. coli is released into the environment through deposition of fecal material, this bacterium is widely used as an indicator of fecal contamination of waterways. Recently, research efforts have been directed towards the identification of potential sources of fecal contamination impacting waterways and beaches.

Detailed explanation-2: -Bacteria play an important role in decomposition of organic materials, especially in the early stages of decomposition when moisture levels are high. In the later stages of decomposition, fungi tend to dominate. Bacillus subtilis and Pseudomonas fluorescens are examples of decomposer bacteria.

Detailed explanation-3: -Escherichia coli (E. coli) is a bacteria that normally lives in the intestines of both healthy people and animals. In most cases, this bacteria is harmless. It helps digest the food you eat.

Detailed explanation-4: -Escherichia coli (E. coli) is a bacteria that normally is an important part of the healthy intestinal tracts of humans and animals. However, there are some kinds of E. coli that are harmful and can cause disease.