a. About half
	b. Only one-tenth
	c. About one-third

2. How old is the average forest?

	a. About the age of a fifth grader, 9 - 11 years old
	b. A little older than most grandparents, 70 - 100 years old
	c. Extremely old! Four- to five-thousand years old

3. An average tree can provide oxygen (air we need to breathe) for how many people each day?

	a. One to three people
	b. Four to five people
	c. Ten or eleven people

4. Only one country in the world ended the twentieth century with more trees than it had at the beginning of the century.
That country is:

	a. The United States
	b. Israel
	c. Belgium

5. Which of these kills the most trees each year?

	a. Disease
	b. Forest fires
	c. Insects

6. Which of these is NOT a result of planting forests?

	a. Better soil
	b. Increased rainfall
	c. Global warming

7. Which of these items are made from forest products?

	a. Lumber, furniture, and paper
	b. Baby foods, pet foods and cosmetics
	c. All of the above

8. Trees clean the air by

	a. Absorbing carbon dioxide
	b. Filtering out dust
	c. All of the above