​

Humans want to use many inexhaustible natural sources,like salmon and halibut from the Pacific Ocean,lake trout from the great lakes ,trees from our forests,and the deer and waterfawl that are hunted annually.Nonrenewable natural resources like coal ,oil ,gas or minerals are not considered here.

we humans also want that there should be a pol-

icy or a technique which is very useful to get maximum output of in-

exhaustible natural resources and not to deplate that resources below a substainable level.

here is a mathematical model providing some insights into the management or a planning process of inexhaustible natural resources.this devlopment was given by clark.