What is the effect of reforestation?

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Reforestation refers to the process of planting forests in areas where forests have previously existed but have been depleted or removed. This practice helps to restore ecosystems that have been disrupted by deforestation or other forms of land use. By planting trees in these areas, reforestation contributes to a number of environmental benefits, including the restoration of biodiversity, improvement of air and soil quality, and enhancement of carbon sequestration, which helps mitigate climate change.

In contrast, planting forests in completely treeless areas or focusing on small urban trees do not directly address the restoration of previously forested lands. Recycling paper products, while beneficial for reducing waste, does not involve actively planting trees and does not contribute directly to reforestation efforts. Hence, the act of reforestation specifically involves replenishing forested areas that have been lost, making the correct choice clearly aligned with that definition.