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Importance of Trees

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  • Feb. 2011
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Ministry of Education

Importance of trees

Student name:
Grade: 10-g

Introduction
Trees are important to humankind not only economically, environmentally and industrially,but also spiritually, historically and aesthetically, for they sustain human life through direct and indirect gains by providing a wide range of products for survival and prosperity. However, it is not always easy to define “tree.” A tree is a large, long-lived (i.e., perennial) woody plant that attains a height of at least 6 m (20 ft) at maturity in a given locality and usually—but not always—has a single main self-supporting stem called a “trunk” or a “bole,” which gives off spreading branches, twigs and foliage to make a crown (Venkatesh, 1976; Panshin & de Zeeuw,1980; Hawkins, 1986). Since the diameter at breast height (dbh) of trees is determined internationally at 1.35 m (4.5 ft) above the ground, a tree must be unbranched—i.e., with a single trunk—at least up to 1.5 m (5 ft) from the ground. But this definition does not cover the following (Venkatesh, 1976), which are also considered trees: • Palms are typically unbranched trees with only one trunk (columnar stem), called the “caudex,” which ends in a crown of large leaves. • Bamboos are trees without a main trunk but with a cluster of culms arising from the underground rhizome. These culms are unbranched, with distinct nodes and internodes that give them a jointed appearance.

OutLine
1-uses of trees
2-trees and environment
3-how to help save trees

BrainStorm

collecting enough information for the scheme
collecting enough information for the scheme

make sure all information are correct

make sure all information are correct

collect needed sources and references
collect needed sources and references
Importance of Trees
Importance of Trees

putting information in its right place
putting information in its right place

Conclusion
So in the end...