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