1. FORESTS AND AIR QUALITY

2. Forests are oxygen _?_.
Factories

3. Forests and Air Quality
To grow a pound of wood, a tree uses __________ pounds of carbon dioxide.
Answer:

4. Forests and Air Quality
2. A tree gives off ___________ pounds of oxygen when producing pound of wood.
Answer: 1.07

5. Forests and Air Quality
3. An acre of trees might grow ___________ pounds of wood a year.
Answer: 4,000

6. Forests and Air Quality
4. An acre of trees use ____________ pounds of carbon dioxide per year.
Answer: 5,880

7. Forests and Air Quality
5. An acre of trees give off ____________ pounds of oxygen in the process of producing wood each year.
Answer: 4,280

8. People need wood for houses.

9. People Need Wood For Houses.
____________ board feet of lumber for each single family house.
Answer: 15,823

10. People Need Wood For Houses.
____________ square feet of panel products.
Answer: 11,408

11. People Need Wood For Houses.
____________ pounds of paper per year for books, towels, packaging, and all the other products they use.
Answer: 681

12. People Need Wood For Houses.
Each person needs _____________ pounds of oxygen per year to breathe.
Answer: 365

13. When a forest gets old and overcrowded:
More wood may decay each than grows.
As growth stops, trees start to use oxygen rather than yield it.

14. For every pound of wood which decays, the process reverses:
1.07 pounds of oxygen is used up.
1.47 a pound of carbon dioxide is put back into the air.