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 the Amazon forest contributes to the Earth's atmosphere, we can follow these steps:

### Step 1: Understand the Contribution of the Amazon Forest
The Amazon forest is often referred to as the "lungs of the Earth" due to its significant role in producing oxygen through photosynthesis.

**Hint:** Think about the role of forests in oxygen production.

### Step 2: Identify the Percentage of Oxygen Contribution
It is known that the Amazon forest contributes approximately 20% of the total oxygen in the Earth's atmosphere.

**Hint:** Recall the common percentage figures associated with the Amazon forest's contribution.

### Step 3: Convert the Percentage to a Fraction
To express 20% as a fraction, we can convert it:
- 20% = 20/100 = 1/5

However, the question specifically asks about the options provided. The contribution of the Amazon forest can also be represented as one-fourth (1/4) in a different context, but in this case, we are looking for the exact contribution.

**Hint:** Consider how percentages can be converted into fractions.

### Step 4: Analyze the Options Given
The options provided in the question are:
- a) one-third
- b) one-fourth
- c) one-fifth
- d) one-sixth

Since we established that the Amazon forest contributes 20% of the oxygen, which is equivalent to one-fifth (1/5), we need to select the correct option.

**Hint:** Compare the calculated fraction with the options given.

### Step 5: Select the Correct Answer
From our analysis, the correct answer is:
- c) one-fifth

**Final Answer:** The Amazon forest contributes one-fifth (1/5) of the total oxygen in the Earth's atmosphere.