We know that trees are important ____ for animals and birds, but trees are also necessary for the ____ of nature. Carbon dioxide exists naturally in the air, but ____, cars and trucks put too much carbon dioxide into the air. Trees take in the ____ through their leaves for their food and turn it into ____ for us to breathe. ____ can help us to save energy. A big, leafy shade tree helps keep us ____ during the summer, reducing the need to use electricity to run an air conditioner. Trees also help keep us warmer in the ____. Many schools, businesses and farms have rows of ____ trees around their buildings to a block the cold winter wind. Planting a tree is a great way for you to make a big impact on the ____. You could even organise a tree ____ event!

Trees

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