Consider the following statements about harmful effects of radioactive pollution
I.Radiations from nuclear wastes causes mutation at a very high rate
II.At high doses nuclear radiations are lethal
III.at low doses radiation cause disorders and cancer
Which of the statements given above are correct?

Options

A. I and II
B. I and III
C. II and III
D. all of these

Answer

To determine which statements about the harmful effects of radioactive pollution are correct, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement I: Radiations from nuclear wastes cause mutation at a very high rate.**
- This statement is true. Radioactive materials emit radiation that can interact with biological tissues, leading to changes in DNA sequences. These changes can result in mutations, which occur at a higher rate due to the ionizing nature of radiation.

2. **Statement II: At high doses, nuclear radiations are lethal.**
- This statement is also true. High doses of nuclear radiation can cause severe damage to cells and tissues, leading to cell death. This can result in acute radiation syndrome, which can be fatal.

3. **Statement III: At low doses, radiation causes disorders and cancer.**
- This statement is true as well. Low doses of radiation can lead to long-term effects, including an increased risk of cancer and other health disorders. The risk is cumulative over time, and even small doses can contribute to the development of cancer.

### Conclusion:
All three statements are correct regarding the harmful effects of radioactive pollution. Therefore, the correct answer is that all statements (I, II, and III) are true.