Part 1 of Essay
When a species of an animal or plant becomes extinct, it ceases to exist on earth. This may seem like a very obvious statement, but it is important to remember exactly what "endangered" means and what a threatened species is in danger of becoming. There are many species today who are close to extinction mainly because pe ....

Part 2 of Essay
.... able to receive communications from other whales, which are anymore distant than a few hundred kilometers anymore. Their communication is interfered with by the sound of ship’s motors, sounds that must be as painful to whales ears as a truck on a highway is to human’s ears. The decimation of great whales has been going on for centuries, one species after another hunted to levels so low that it is no longer profitable to hunt them. As early as the eighteenth century the Basques of northern Spain hunted the Atlan ....