Across
- 1. This pine has five needles
- 3. At one point tulip bulbs where once more valuable then what in Holland
- 5. This animal eats only plants
- 6. Plants make this so we can survive
- 7. Without this nothing in the world can exist
- 9. It takes this many days for a tree to turn 26 pounds of carbon dioxide into oxygen
- 13. What compounds make you cry when you cut onions?
- 14. Looks like winter green but is bland
- 16. The what of yellow birch taste like peppermint
Down
- 1. Plants need this liquid to survive
- 2. This type of plant makes 70 percent of our oxygen
- 4. This is a way a plant gets food
- 7. Vanilla flavoring is made from orchid called vanilla what
- 8. Strawberries have about 200 what
- 9. The pointy thing on some plants used for protection.
- 10. One acre of trees can make oxygen for this many people
- 11. Plants need this to survive
- 12. Some trees have blank names
- 15. This plant part collects water