... an alarming rate, bearing enormous impacts on the health of earth. Our oceans and seas are being polluted and overfished. Our atmosphere is injected with increasing amounts of carbon dioxide, which hurts the entire planet. All of these problems can be traced to our vast, rapidly expanding population, which has stressed our world far too greatly. Our Population In 1994, the world population was 5 602 800 000. This population ... had a doubling time of only forty-one years (De Blij ... ...

• Word Count: 3065
• Approx Pages: 12
• Has Bibliography
• Grade Level: High School

... , other animals evolved in the New World and traveled across the land bridge in the opposite direction from North America to Eurasia. Among the genera that originated in the New World was the horse (Equus). Horses migrated to Asia and Europe during a period when the land bridge was exposed. Before the mass extinctions, the horse became one of the most populous mammals in North America. By the end of the Ice Age, the horses had completely died ... changed positions and depth as the shorelines migrated inward under rapidly rising seas. Rainfall patterns shifted; the seasons themselves were...

• Word Count: 3100
• Approx Pages: 12