The pollution which are already present in nature, but are released
in substantial amounts by man are known as

Options

A. Quantitative pollutants
B. Qualitative pollutants
C. Degradable pollutants
D. Primary pollutants

Answer

To solve the question regarding the type of pollution that is already present in nature but is released in substantial amounts by humans, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for a specific type of pollution that exists naturally but is increased significantly due to human activities.

2. **Analyze the Options**:
- **Quantitative Pollutants**: These are pollutants that are naturally occurring but are released in large quantities by human activities. An example is carbon dioxide, which is naturally present but is emitted in excess due to human actions like burning fossil fuels.
- **Qualitative Pollutants**: These pollutants are entirely man-made and do not exist in nature prior to human intervention, such as CFCs (chlorofluorocarbons). This option does not fit the question.
- **Degradable Pollutants**: These are substances that can be broken down by natural processes or artificial means, such as sewage or paper waste. This option is also not relevant to the question.
- **Primary Pollutants**: These are pollutants that are released directly into the environment from natural sources, such as volcanic eruptions. This option does not match the criteria of the question.

3. **Identify the Correct Answer**: Based on the analysis, the correct answer is **Quantitative Pollutants** because they are already present in nature and their substantial release by humans leads to pollution.

### Final Answer:
The pollution which is already present in nature but is released in substantial amounts by man is known as **Quantitative Pollutants**.

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