Whether on land or in oceans, living resources such as trees and fishes are being harvested by man excessively for timber and food respectively. Deforestation (loss of forests) causes loss of animals and plants at a rate 3 or 4 times higher than their natural death rate while over fishing causes the depletion of nearly 90% of the world’s marine fish stocks (fish-able populations). For instance, about 60,000 tons of the Atlantic Blue fin tuna are now being harvested whereas