INTRODUCTION
Few months ago, a movie called an Inconvenient truth, was in the movie theater, presenting many alarming facts about the earth global warming. Besides global warming, another aspect of our modern civilization is even more alarming and people seem to forget about it. In this paper, we will try to present the most beautiful and amazing forest on this earth which is the tropical rain forest. We will first try to define what is considered as a tropical rain forest. Then, we will discus the structure of this forest. After that, we will consider the different growth forms in the tropical rain forest as well as the different tree characteristics of these forests. We will, furthermore, give some examples of trees and animals. Finally, we will discuss the importance of the tropical rain forest as well as the danger facing these forests today.

DEFINITION First, let’s try to define tropical rain forest. As many do not know, the real “scientific” name for tropical rain forest is tropical or subtropical moist broadleaf forest, tropical rain forests can also be called tropical wet forest. If someone looks for a definition on internet, he will find that tropical rain forest are defined as tropical forest biome. In addition, this biome includes several types of forests. Others will define the tropical rain forest as a forest of tall trees in a region of year-round warmth. Still other will define it as a very dense, warm wet forest. As we will discuss the biome of the tropical rain forest, we will understand the complexity of giving a simple short definition of the rain forest. Probably, the best definition that can be given is a simple list of the ecologic conditions needed in a rain forest. Consequently, we will begin our definition by discussing all the important conditions that allowed the rise of tropical rain forests. The first and probably most important condition is the very high rainfall over the year; some say that it is almost always raining in a