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Facts about trees

Trees are the longest living organisms on Earth, and never die of old age.
Trees remove harmful pollutants from the air and act as our natural air filter.
More than one million acres of National Forests are in need of reforestation.
A mature birch tree can produce up to 1 million seeds per year.
A single tree produces approximately 260 pounds of oxygen per year. That means two mature trees can supply enough oxygen annually to support a family of four!
Trees properly placed around buildings can reduce air conditioning needs by 30%
Trees can communicate and defend themselves against attacking insects. Scientists have found that trees can flood their leaves with chemicals called phenolics when the insects begin their raid. They can also signal danger to other trees so they can start their own defense.
The world’s oldest clonal tree cluster is found in Utah, USA. DNA testing has indicated that a group of quaking aspens named Pando is about 80,000 years old. Its estimated weight is thought to be over 6,000 tons, making it not only the world’s oldest living entity but also the world’s heaviest.
The world ́s fastest-growing tree is Paulownia tomentosa, pictured above, also known as the empress or foxglove tree (in honor of its explosion of purple foxglove-like flowers). It can grow 20 feet (6 meters) in its first year, and as much as 1 foot (30 centimeters) in three weeks.
The world’s tallest tree is a coast redwood, found in Redwood National Park in California, USA. It’s called Hyperion, and it’s said to be roughly 116m high.
The Great Basin Bristlecone Pine (Pinus Longaeva) has been deemed the oldest tree in existence, reaching an age of over 5,000 years old.
Trees block noise by reducing sound waves. They reduce noise through a phenomenon called sound attenuation, which is the reduction of sound intensity. Leaves, twigs, and branches on trees, shrubs, and herbaceous growth absorb and deflect sound waves to mask unwanted noise.
Not only can they produce chemicals to combat leaf-eating insects, for instance, but some also send airborne chemical signals to each other, apparently warning nearby trees to prepare for an insect attack. Research has shown that a wide range of trees and other plants become more resistant to insects after receiving these signals.
Trees absorb carbon dioxide (CO2), removing and storing the carbon while releasing the oxygen back into the air.
Trees improve water quality. As rain falls to the Earth, it is slowed and filtered by trees, helping it soak into the soil. Trees then serve as natural sponges, collecting and filtering rainwater and releasing it slowly into streams and rivers.
Trees have growth rings inside their trunk. If you count each ring – that is how many years it has been alive for!
For over a billion people get their food, medicine and fuel from these forests. 250 million people live in forests and savannah areas, which they fully depend on when it comes to daily food supplies and earning money. Forests are the natural habitat for more than 80% of Earth’s land animals.
According to the World Wildlife Fund more than 30% of the Earth’s land surface is covered by forests. In the process of deforestation carbon dioxide is emitted back into atmosphere, which puts humanity in a dangerous situation.

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