1. extinction
... species According to many biologists the human population is the primary reason for the increase in the rate of extinction. Since 1600 about 1100 species have became extinct. The rapid disappearance of species was ranked as one of the planet's gravest environmental worries, surpassing pollution, global warming and the ... century when two species were discovered. They are now protected in forest reserves, but they are still threatened by dogs, cats, and mongooses. They have a low birthrate, which makes the population particularly vulnerable. The Green Sea Turtle was common in shallow area...
- Word Count: 2997
- Approx Pages: 12
- Grade Level: High School