... were elk and deer. These animals spread so rapidly that the area they were living in became over populated. This caused many of them to die of starvation. In 1933 Aldo Leopold ,an American biologist, developed a theory that one unit of habitat can only support a certain number of animals. Any extra animals needed to be harvested by hunters because they would probably ... ...

• Word Count: 724
• Approx Pages: 3
• Grade Level: High School