1					2
													3			4
5									6
							7
		8
																		9
					10
				11			12
			13					14
														15						16
17
													18
														19

Across 5. boards sawed from trees 6. when one animal eats another animal 8. two types of animals that live together for mutual benefit 10. animal with a backbone 12. plant or animal that lives in, on, or with another, sharing its food, but not helping or harming it 13. inactive core that gives a tree strength and rigidity 17. construction material made of thin layers of wood glued together 18. wood`s resistance to compression 19. woody plants with a bushy growth pattern and multiple stems

Down 1. a complex association of trees, shrubs, and plants, which all contribute to the life of the community 2. refers to the tendancy of wood to bend permanently due to moisture change 3. the relationship between two organisms, either plant or animals, in which one feed on the other without killing it 4. when different species of wildlife compete for the same food supply, cover, nesting sites, or breeding sites 7. a forest with all marketable trees removed from it 9. have the ability to regulate their body temperature 11. animals that feed on other animals 14. animals that are adapted to live in a natural environment without the help of humans 15. all areas between dry upland and open water 16. woody perennial plants with a single stem that developes into many branches 17. the animal being eaten by the predator