With reference to the planet Earth, consider the following statements: I. Rain forests produce more oxygen than that produced by oceans. II. Marine phytoplankton and photosynthetic bacteria produce about 50% of world's oxygen. III. Well-oxygenated surface water contains several folds higher oxygen than that in atmospheric air. Which of the statements given above is/are correct?
AI and II
BII only
CI and III
DNone of the above statements is correct
Answer & Solution
Correct answer: B. II only
UPSC CSE Prelims 2025 (GS-I, Set A), Q.40. Official answer key: B.
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