Introduction

It is truly amazing in how many different ways animals protect themselves against their predators. Not surprisingly, therefore, ecologists have been fascinated by such defenses for centuries. They have classified them according to certain criteria and then investigated the characteristics of each defense class, for example, how defense benefits depend on prey density. Defenses are also costly, however, and only advantageous if their benefits outweigh their costs. Cost-benefit analyses thus provide insights into the evolution of prey defenses.

While this article focuses on animal defenses, similar principles are valid for plant and host defenses.

Trash To Cash

Trash To Cash

This book will surely change your life due to the fact that after reading this book and following through with the steps that are laid out for you in a clear and concise form you will be earning as much as several thousand extra dollars a month,  as you can see by the cover of the book we will be discussing how you can make cash for what is considered trash by many people, these are items that have value to many people that can be sold and help people who need these items most.

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