Chapter 37, Problem 9WIO

Summary Introduction

To enlist:

Two species; one of which is endangered and the other is growing out of control. Also, to compare their birth and death rates and other factors that leads to such differences.

Concept introduction:

Endangered species is the one that is on the verge of extinction. One such endangered species is Tigers. There are only about $\text{3200}$ tigers left in the world. Now, tigers only occupy $\text{7\%}$ of their original range.

On the other hand, some species are growing out of control. One such species is Brown tree snake. These species are mainly found in the United States and were accidently introduced in the $\text{1950s}$. Since then, this species is growing out of control and decimating birds in the region.