Near at hand, we all can see beautiful trees. Every time I walk the city parks, or visit the country side, I gaze the trees that I cross bringing back memories of happy tree climbing, tent camping in the woods, long walks with my folks, hiking with friends or just relaxing underneath a tree's branches enjoying the breeze. Although my yard was never big enough, I managed to as a kid to convince my parents to plant trees inside its perimeter and whenever I touch their trunk I get excited knowing that they would not have been there if I did not insist to plant them.
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tree calculators are large, perennial, woody plants, which continue growing until they die. They grow just about everywhere on Earth, from extreme cold regions near the Arctic and the Antarctic to hot tropical regions around the equator and even in deserts and the most diverse populations of trees are found in the tropical rain forests. In comparison to other plant forms, trees are considered long-lived. As perennial plants, they are classified as having a distinct, self-supporting main stem, or trunk, containing a woody tissue that produces secondary limbs and branches. Their height and single main stem differentiate them from shrubs, which are usually shorter and have many stems. With more than 20,000 types of trees growing around the world, a few species can grow really tall, like redwoods and eucalyptus that reach heights of more than 110 m. (360 ft.). Trees live anywhere from a few, to thousands of years, like the olive tree or a bristlecone pine growing in California's White Mountains that has been dated as at least 4700 years old.