Green plants remove carbon dioxide from the air during
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Answer and explanation
Answer: B. photosynthesis
CO₂ is used to make food in photosynthesis — part of the carbon cycle.
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Class 9 · Science · Exploration
13. Earth as a System: Energy, Matter, and Life
In the water cycle, water vapour forms clouds by
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Winds blow mainly because the Earth's surface is
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Answer and explanation
Answer: A. heated unevenly
Uneven heating creates differences in air pressure, and air moves from high to low pressure.
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