We've got to differentiate first afforestation to reforestation. The former is planting trees in areas where there is no sign or trace of plants or seedlings before. It's like your making a new environment by your own. The latter is replacing or bringing back what was taken before.
Answer:
Stratified random sampling
Explanation:
Stratified random sampling is a design that involves dividing a group into smaller division or strata to get a defined result, this division is based on character or shared attitude. This design is also known as proportional random sampling.
