Reforestation can take naturally by following ways: 1. For example due to natural calamities like cyclone, earth quake etc and by human activities sometimes trees are cut, not totally destroyed. these trees regrow themselves after couple of years as new tress.

Reforestation (occasionally, Reafforestation) is the natural or intentional restocking of existing forests and woodlands (forestation) that have been depleted, usually through deforestation, but also after clearcutting.

Forestation is either growing existing forests (proforestation) or establishing forest growth on areas that either had forest or lacked it naturally. In the first case, the process is called reforestation, or reafforestation while the second is called afforestation.

There are two separate kinds of deforestation—clear-cutting and selective logging. Clear-cutting occurs when most or all of an entire area is taken down, while in selective logging, loggers only cut down the trees that are of use to them.

Deforestation refers to the decrease in forest areas across the world that are lost for other uses such as agricultural croplands, urbanization, or mining activities. Greatly accelerated by human activities since 1960, deforestation has been negatively affecting natural ecosystems, biodiversity, and the climate.

It means clearing or cutting of trees or forests over large area. Forests are cut so that land can be used for different purposes like building houses,making roads etc.

This term refers to the general increase in the earth’s average tempera- ture caused by the presence of greenhouse gases in the atmosphere, which causes changes in climate patterns across the globe. Some of the news you may have heard. Polar bears are losing. their habitats.