Define the following terms:
Reforestation: Reforestation is the process of regenerating or replanting forest areas that have been destroyed or damaged for the benefits of mankind.
Afforestation: Afforestation is the establishment of a forest or stand of trees (forestation) in an area where there was no previous tree cover.
Agroforestry: Agroforestry is land management in which trees and shrubs are grown around crops or pastureland.