Answer: B. Rain forests
Explanation: Without rainforests, our planet is unable to mitigate excess greenhouse gas emissions, which destabilizes the Earth's climate. Rainforests store and filter excess carbon and other pollutants from the atmosphere and release oxygen through photosynthesis.
In the summary: Rainforests retain and filter excess carbon and other contaminants from the atmosphere, while also releasing oxygen via photosynthesis. Natural air filters, Inforests assist to clean up pollutants and improve air quality.
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