Great changes occur in the atmosphere's composition with the passage of time when the plants increase in number.
Before life began on the planet, the atmosphere of earth was largely made up of nitrogen and carbon dioxide gases. But when photosynthesizing organisms increase in number on Earth's surface as well as in the oceans, the amount of carbondioxide decreases and oxygen increases.
So we can conclude that great changes occur in the atmosphere's composition with the passage of time when the plants increase in number.
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