The presence of a particular group of bacteria in water bodies indicates contamination. Identify this group of bacteria.

Explanation

To solve the question regarding the group of bacteria that indicates contamination in water bodies, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for a specific group of bacteria that indicates contamination in water bodies.

2. **Identifying Indicator Organisms**: We need to identify what are known as "indicator organisms." These are microorganisms whose presence in a water sample suggests that the water may be contaminated with pathogens.

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