Rainforests have evolved over millions of years to turn into the incredibly complex environments they are today. Rainforests a store of living and breathing renewable natural resources that for eons, by virtu of their richness in both animal and plant species, have contributed a wealth of resources for the survival and well-being of humankind.Thes resources have included basic food supplies, clothing, shelter, fuel, species, industrial raw materials, and medicine for all those ho have lived in the majesty o the forest.