When oil and petrol spread over the water surface, which one of the following occurs?
جب تیل اور پٹرول پانی کی سطح پر پھیلتا ہے تو ، مندرجہ ذیل میں سے کون سا ہوتا ہے؟
Answer: Sunlight penetration and oxygen mixing are prevented.
Explanation
Oil and petrol form a thin layer on the water surface, blocking sunlight from reaching underwater plants.
This layer also restricts the mixing of oxygen from the air into the water, harming aquatic life.
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