Contribution of methane to global warming is:

Options

A. `6%`
B. `14%`
C. `20%`
D. `30%`

Answer

To determine the contribution of methane to global warming, we can follow these steps:

### Step 1: Understand Greenhouse Gases
Greenhouse gases are substances in the atmosphere that trap heat. They include carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), ozone (O3), and halocarbons.

**Hint:** Remember that greenhouse gases are responsible for the greenhouse effect, which leads to global warming.

### Step 2: Identify the Role of Methane
Methane is one of the significant greenhouse gases. It is known to be more effective than carbon dioxide at trapping heat, even though it is present in smaller quantities.

**Hint:** Think about how different gases contribute to the greenhouse effect differently based on their heat-trapping capabilities.

### Step 3: Look at Contribution Percentages
According to the information, methane contributes approximately 15% to 20% to global warming. This is a significant amount compared to other greenhouse gases.

**Hint:** Compare the contribution of methane with other greenhouse gases to understand its impact better.

### Step 4: Choose the Correct Option
Given the options provided (6%, 14%, 20%, and 30%), the closest and most accurate estimate for methane's contribution to global warming is 20%.

**Hint:** Eliminate options that are clearly lower than the estimated contribution of methane.

### Final Answer
The contribution of methane to global warming is approximately **20%**. Therefore, the correct answer is option C.

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