jony raj
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Poll

Excessive exposure of humans to UV rays results in

  • 4

Poll Results

100%(a) damage to immune system ( 1 voter )
0%(b) damage to lungs
0%(c) skin cancer
0%(d) peptic ulcers
Based On 1 Vote

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CBSE 2022-2023.

NCERT SCIENCE.

CH-15 Our Environment

Important Questions.

Important MCQ.

Class 10 Biology.

NCERT book extra Question

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