How much amount of the total oxygen is contributed by the Amazon forest in the earth's atmosphere ?

Options

A. One-third
B. One-fourth
C. One-fifth
D. One-sixth

Answer

To determine how much oxygen is contributed by the Amazon forest to the Earth's atmosphere, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Contribution of the Amazon Forest**:
- The Amazon forest is often referred to as the "lungs of the planet" because of its significant role in oxygen production.

2. **Quantify the Oxygen Contribution**:
- It is stated that the Amazon forest contributes approximately **20%** of the total oxygen in the Earth's atmosphere.

3. **Convert Percentage to Fraction**:
- To express 20% as a fraction, we can convert it:
\[ 20\% = \frac{20}{100} = \frac{1}{5} \]

4. **Conclusion**:
- Therefore, the Amazon forest contributes **1/5** of the total oxygen in the Earth's atmosphere.

5. **Select the Correct Option**:
- If presented with options, the correct choice corresponding to 20% oxygen contribution would be **option 3**, which states **1/5**.

### Final Answer:
The Amazon forest contributes **1/5** (or **20%**) of the total oxygen in the Earth's atmosphere.

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