-Two mature trees provide enough oxygen for a family of four.

-Inserting screws, nails or injecting fertilizer into a tree trunk can cause decay and death.

-​By cooling the air and ground around them, the shade from trees helps cool the Earth's temperature.

-Trees are good noise barriers making a neighborhood quieter.

-Well placed trees help cut energy costs and consumption by decreasing air conditioning costs 10-50% & reducing heating costs as much as 4-22%.

-Trees are the longest living and largest living organisms on Earth.

-Trees grown in city conditions often do not live as long as it would in their natural environment.

-Most trees are made up of the following elements: carbon, hydrogen, oxygen, nitrogen, phosphorus and sulfur.

-We use tree for many resources (fire, paper, furniture, etc.)

-Birds and animals use trees for their shelter and as a source of food.

-Trees increase property values by 5 to 20% due to their landscaping value.

-The inside of a tree is made of cork, phloem, cambium, and xylem.

-The xylem of a tree carries water from the roots to the leaves.

-Trees make their food through a process called photosynthesis.

-Trees absorb carbon dioxide, nitrogen oxide, ozone, and other pollutants through their leaves - big, broad leaves absorb the most air pollution.

-All green plants produce oxygen as a by-product of photosynthesis.

-A mature tree can produce as much as half a pound of oxygen per day

-A mature human breathes about two pounds of oxygen per day.

-Annual day to plant and care for trees - Arbor Day was created by J. Sterling Morton in 1872.