• Trees, like all green plants, they release oxygen and use carbon dioxide.  We breathe in oxygen and breathe out carbon dioxide - so trees help to make the air good for us.  We cannot live without them!
• The oldest tree is over 2,000 years old; they are the oldest living things.
• Trees are the biggest living things, supported by tree trunks, which are toughened stems.  The tallest tree in the world is about 100m high.  The fattest tree in the world is 8m wide; you could drive a car through it.
• Evergreen or deciduous - Trees that lose their leaves in the autumn are called deciduous trees, they look dead in winter but will sprout green leaves when spring’s longer, warmer days arrive.  Evergreen trees have thin needles or tough waxy leaves that can survive winter’s cold.

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