Chapter 37, Problem 1RQ

What are some reasons a species may be absent from a habitat or region to which it should adapt well?

Summary Introduction

To determine: The reasons for the absence of species from a particular habitat or area to which it should adapt well.

Introduction: The geographical distribution of the species can be explained with the help of fossil records. The fossil record indicates that some animals once flourished in the habitats that they no longer cover.

Explanation of Solution

The following are the reasons for the absence of species from a particular habitat or region:

• Some species become extinct through hunting.
• Some species prevent other species from colonizing in a particular region.
• Some physical barriers to the spread of the species are also one of the reasons.
• Environmental changes in a particular habitat also affect the species.