A pollutant can best defined as it

Options

A. Has natural geochemical cycles .
B. Changes homeostasis of environment
C. Disturb natural flora of a place
D. Become stabilised in ecosystem forever

Answer

**Step-by-Step Solution:**

1. **Understanding the Definition of a Pollutant:**
- A pollutant is defined as any substance that causes pollution. This can include both chemical and biological substances.

2. **Identifying the Impact of Pollutants:**
- Pollutants can alter the physical, chemical, or biological properties of natural resources. This alteration can have significant effects on the environment.

3. **Recognizing Natural Resources Affected by Pollutants:**
- Natural resources that can be affected by pollutants include air, water, and soil. These resources are essential for maintaining ecological balance.

4. **Evaluating the Options:**
- When considering the options provided in the question, we need to identify which statement accurately describes the role of a pollutant.
- The correct option states that a pollutant "changes the homeostasis of the environment," indicating that it disrupts the natural balance.

5. **Conclusion:**
- Therefore, the best definition of a pollutant is that it is a substance that changes the homeostasis of the environment, affecting both flora and fauna.

**Final Answer:**
A pollutant can best be defined as a substance that changes the homeostasis of the environment.

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