Over the last one hundred years global temperature has increased between 0.6 and 1.1 degrees Fahrenheit, glaciers over the world have decreased in size and worldwide sea level has risen 10 to 20 centimeters. (Global Warming Opposing Viewpoints) Are these changes due to human behavior or natural...

INTRODUCTION Human population in the past 48 years has more than doubled its seize, from 2.5 billion in 1950 to 5.9 billion in 1998 . A few month ago the Secrtary of the United Nation declared a baby as the No. 6 billion citezen of the earth. As you may have noticed, human population has reached a...

INTRODUCTION Human population in the past 48 years has more than doubled its seize, from 2.5 billion in 1950 to 5.9 billion in 1998 . A few month ago the Secrtary of the United Nation declared a baby as the No. 6 billion citezen of the earth. As you may have noticed, human population has reached a...

Reef Destruction and Conservation Efforts Recent government studies have shown that coral reefs and marine fish are in great danger. Researchers have determined that within fifty years coral reefs existence will be cut in half. Coral reefs are one of the most diverse and biologically productive e...