Passage 1 Trees are useful to man in three important ways; they provide him with wood and other products; they give him shade; and they help to prevent droughts and floods. Unfortunately, in many parts of the world, man has not realized that the third o
Passage 1 Trees are useful to man in three important ways; they provide him with wood and other products; they give him shade; and they help to prevent droughts and floods. Unfortunately, in many pa