Biology Our Environment CBSE Board 2025 Medium
A gas ‘X’ is found in the upper layer of atmosphere. It is a deadly poison, but still essential for all life…
A gas ‘X’ is found in the upper layer of atmosphere. It is a deadly poison, but still essential for all life forms on earth.
- (a)Identify the gas and state the main factor for its depletion in the atmosphere.
- (b)How is this gas formed in the upper atmosphere ?
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