A forest is an area surrounded by a variety of dense vegetation. There are different definitions of forest based on different criteria. According to the widely used definition by the Food and Agriculture Organisation of the United Nations, forests cover four billion hectares (15 million square miles) or about 30 percent of the world's land area in 2006. This forest also serves as a breeding ground for many animals as well as changing the course of various rivers and canals and conserving the soil. Forests are one of the most important parts of the earth's biosphere Although initially the characteristics of a forest are specified according to the characteristics of its tree. This is a huge supplier of oxygen. Forests are present on all continents except Antarctica. Temperatures above ten degrees Celsius in summer and seventy-five centimeters of annual rainfall are ideal for forest growth.

The cause of destruction:

Millions of years ago, about sixty percent of the world was forested. Huge forests have been destroyed due to drastic climate change, glacier movement and human activity. At present, people are on the verge of deforestation to cut down trees mercilessly They also cut down trees that need wood to build houses.

Forests are found in all areas where trees can grow. The tree grows up to the height (tree line) where the tree can grow. However, there are exceptions in a few cases. For example, forests are not seen in areas where there are frequent fires due to natural causes or other storms are very severe or the environment has changed drastically as a result of human activities.

Most of the 10 ° north and south latitudes of the equatorial region are affected by tropical rainforests. The north forest lies between 53 ° north and 67° north longitude.

Forests are home to many animals and different species of trees. Biomass per unit area is much higher than other flora. Most of the time these organisms are made from the root system under the soil and from the partially decomposed waste material of the tree. The wood compounds in the forest contain lignin. It decomposes relatively slowly compared to organic matter such as cellulose or carbohydrates. The distinction between forest and forest is based on how far the canopy of its vegetation extends. In the forest, the branches of different trees and their petals often merge with each other. Although there may be differences in the size of the area being referred to as a forest. In the forest, there are many open canopies in the area where there are big trees, and there is a lot of space between each tree. As a result, much more sunlight can reach the ground through it.

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