Every second, human body converts carbon-14 atoms into `C-12` atoms

Options

A. 10
B. 100
C. 1200
D. 3800

Answer

To solve the question regarding the conversion of carbon-14 atoms into carbon-12 atoms in the human body, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Carbon Isotopes**:
- Carbon exists in different isotopes, primarily carbon-12 (C-12) and carbon-14 (C-14). C-14 is a radioactive isotope that is unstable and decays over time into C-12.

2. **Human Absorption of Carbon**:
- Humans continuously absorb carbon from their environment, which includes both C-12 and C-14 isotopes. This absorption occurs through the food we eat and the air we breathe.

3. **Decay of Carbon-14**:
- C-14 is unstable and undergoes radioactive decay. This means that over time, C-14 atoms will convert into C-12 atoms. This process is a natural part of the carbon cycle.

4. **Rate of Conversion**:
- The question specifies that every second, a certain number of C-14 atoms are converted into C-12 atoms. According to the information provided, this number is approximately 1,200.

5. **Conclusion**:
- Therefore, the answer to the question is that every second, the human body converts around **1,200 carbon-14 atoms into carbon-12 atoms**.

### Final Answer:
The correct option is **1,200**.

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