<h3>Resources are the products of the physical system but they also depend on human ability and need, not by nature. Human beings evaluate the natural environment and classify those substances that provide value to them. Resources are therefore dynamic cultural conceptions.</h3>
Natural process by which water soluble substances (such as calcium, fertilizers, pesticides) are washed out from soil or wastes. These leached out chemicals (called leachites) cause pollution of surface and sub-surface water.
A submarine canyon is a steep-sided valley that is cut into the bed's of the continental slopes and is an extension of the continental shelf and gains a height of 5 meters. The submarine canyons are found on the active margins and active margins and turbidity are denser and their erosion is triggered by the underwater landslides.
