Atmospheric pollutants formed by human activities constitute of the total

Options

A. 0.95
B. 0.75
C. 0.25
D. 0.0005

Answer

To solve the question regarding the percentage of atmospheric pollutants formed by human activities, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the percentage of atmospheric pollutants that are attributed to human activities.

2. **Identify the Options**: The options given are:
- A) 0.95
- B) 0.75
- C) 0.25
- D) 0.005

3. **Recall Information About Air Pollutants**: Air pollutants can come from various sources, including natural events like volcanic eruptions, but the focus here is on human activities such as vehicle emissions, industrial discharges, and deforestation.

4. **Determine the Contribution of Human Activities**: According to the information provided, human activities contribute to atmospheric pollutants by a very small percentage, specifically 0.05%.

5. **Convert the Percentage to Decimal**: The percentage 0.05% can be expressed as a decimal for comparison with the options.
- 0.05% = 0.05 / 100 = 0.0005

6. **Match with the Options**: Now, compare this value with the provided options:
- A) 0.95 (incorrect)
- B) 0.75 (incorrect)
- C) 0.25 (incorrect)
- D) 0.0005 (correct)

7. **Conclusion**: The correct answer, which represents the contribution of atmospheric pollutants formed by human activities, is D) 0.0005.

### Final Answer:
The atmospheric pollutants formed by human activities constitute **0.0005** of the total.

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