INTRODUCTION

We humans often think that certain animals serve no purpose other than to cause us problems!

These animals (like the mouse) cause destruction to crops, pollute our environment, spread diseases, and contaminate the food we eat!

But. . . is this really all they do??

This Web Quest will allow you to discover for yourself if these organisms are more friend or more foe?

Are they mostly just pesky destroyers, or does their role in our environment as decomposers outweigh the harm they cause?