A : Environmental damage has depleted the ozone layer in the atmosphere.
R : Increase in ozone decreases the amount of UV radiation to earth.

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)
B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2)
C. If assertion is true statement but Reason is false, then mark (3)
D. If both Assertion and Reason are false statements, then mark (4)

Answer

To solve the assertion and reason question, we will analyze both statements step by step.

### Step 1: Analyze the Assertion
**Assertion (A): Environmental damage has depleted the ozone layer in the atmosphere.**

- The ozone layer is a region of Earth's stratosphere that absorbs most of the Sun's harmful ultraviolet (UV) radiation.
- Environmental damage, primarily caused by human activities (such as the release of chlorofluorocarbons (CFCs) and other ozone-depleting substances), has led to the thinning of this layer.
- Therefore, the assertion is correct as it accurately describes the current state of the ozone layer due to environmental damage.

### Step 2: Analyze the Reason
**Reason (R): Increase in ozone decreases the amount of UV radiation to Earth.**

- The ozone layer acts as a shield that absorbs UV radiation from the Sun.
- An increase in ozone concentration would indeed lead to a reduction in the amount of UV radiation that reaches the Earth's surface.
- Thus, this statement is also correct as it reflects the protective role of ozone against UV radiation.

### Step 3: Determine the Relationship Between A and R
- Both the assertion and the reason are true.
- However, the reason provided does not explain the assertion. The assertion discusses the depletion of the ozone layer due to environmental damage, while the reason discusses the effects of an increase in ozone concentration.
- Therefore, while both statements are true, the reason does not serve as a correct explanation for the assertion.

### Conclusion
- The correct answer is that both the assertion and reason are true, but the reason is not the correct explanation of the assertion.

### Final Answer
Both assertion and reason are true, but reason is not the correct explanation of the assertion.

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