down 1.
The recycling of leaves. The dead leaves are used to fertilize the soil.
|
down 4.
Trees are the ____ types of plants.
|
down 5.
Some trees produce edible ____, such as hickory ____.
|
down 6.
The eucalyptus trees that grow in Australia are thought to be the tallest living trees. One eucalyptus tree was measured at over five ____ feet tall.
|
down 7.
Wood is sometimes used as a source of ____ to heat homes.
|
down 8.
The term given to trees because they live for three or more years. Some trees have lived for thousands of years!
|
down 10.
A plant with leaves, roots, and a single, woody trunk.
|
down 12.
Wood that is burnt and then used for cooking food.
|
down 16.
The branches of trees provide protection from this.
|
across 2.
The first trees grew over 350 ____ years ago.
|
across 3.
Writing material that is made from trees.
|
across 4.
Some of the oldest known living trees are thought to be at least 10 ____ years old.
|
across 9.
The beautiful wood from cherry and red oak trees is often used to make these.
|
across 11.
Trees provide protection against ____, which is the gradual wearing away of topsoil due to wind, water, and storms.
|
across 13.
Some trees produce ____, such as apples and peaches.
|
across 14.
The protection from sun that trees can provide.
|
across 15.
The wood from trees. Used as ____ in the building of homes.
|
across 17.
The leaves of trees absorb carbon dioxide and release this gas.
|
across 18.
The roots of trees protect against erosion by holding the ____ in place.
|
