<span>The Indus River valley. On it's banks there were settlements dating as far back as the 4th century BC, making them comparable in age to the ancient city states of Mesopotamia in modern day Iraq.</span>
They came from the ground, formed hundreds of millions of years ago by decayed plants and animals.
C. deltas are a result of deposition. it looks like a triangle at the mouth of a river
Natural environment is of crucial importance for social and economic life. We use the living world as<span>a resource for food supplyan energy sourcea source for recreationa major source of medicinesnatural resources for industrial products</span><span>In this respect the diversity of nature not only offers man a vast power of choice for his current needs and desires. It also enhances the role of nature as a source of solutions for the future needs and challenges of mankind.</span>