Because the forest is the birthplace of four factors, namely housing, apparel, food and medications that are necessary to sustain the life of humans and animals. It is the source of the water stream. Many benefits.
The fourth factor is the forest as a source of housing, clothing, medicines, and food necessary for the survival of humans and animals. The watershed resources Many more benefits
Because the forest is the basic source, housing, clothing, medicine, food and essential to the existence of human and animals. It is the source of river source advantage more.