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Home > Trees in our world
long with the trees in our forests, the millions of trees grown in the Northwest for Christmas trees pump out oxygen all year long, and continue to do so in your home.
Trees help our world breathe
Life on earth is dependent on photosynthesis. All animals either eat plants or other animals that eat plants. And the process is also where oxygen comes from.
Burning fuel also uses oxygen. It takes four large trees one day to replace the oxygen used by a car driven for one hour, one writer says. Just one acre of Christmas trees produces enough oxygen to support eighteen people.
What do trees eat?
Trees need water, but they make their own food from the sun. Leaves contain a green substance, called chlorophyll, that traps the energy from sunlight. A chemical reaction inside the leaf uses water and carbon dioxide to make oxygen and sugary glucose. The glucose is used just as we use it: for making new materials and to supply energy for growth.
The oxygen escapes back into the air ... which is convenient for us people, who need oxygen and breathe out carbon dioxide!
Trees are important
In addition to changing carbon dioxide gas in the air back into oxygen, they provide food, fuel, timber and chemicals. They help keep the soil healthy and keep the soil on hillsides in place. The tree leaves absorb the force of falling rain, and the roots help prevent erosion.
Trees shade us and other living things from the sun. On tree farms where Christmas trees are grown, or on other tree farms where trees used in making paper are grown, new trees are planted as mature trees are harvested. In some areas, trees are cut down without thought of the future. Rain forests are often cut down by poor settlers to find land for farming. But the soil is not good for farming, so it is soon exhausted.
Christmas tree farms are home to a wide variety of bird and mammal species including grosbeaks, sparrows, chickadees, mice, voles and squirrels.
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