

MCQOPTIONS
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1. |
Consider the following statements regarding ozone:1. It is continuously being produced and destroyed2. It helps to sustain life on earth3. It is formed in the atmosphere through photochemical reactionWhich of the above statements are correct? |
A. | 1 and 2 only |
B. | 1 and 3 only |
C. | 2 and 3 only |
D. | 1, 2 and 3 |
Answer» E. | |