1			2		3						4						5
													6						7
8
							9								10
							11
													12								13
14
												15
					16					17					18
														19
		20
21
	22
	23

Across 1. food source to the ultimate consumer 6. the portion of the vertebrate central nervous system enclosed in the skull 10. easily excited or irritated 11. done contrary to or without choice 12. the point at which a nervous impulse passes from one neuron to another 14. a large dorsally projecting part of the brain concerned especially with the coordination of muscles and the maintenance of bodily equilibrium 15. an enlarged anterior or upper part of the brain 16. a plant-eating animal 19. any of the usually branching protoplasmic processes that conduct impulses toward the body of a neuron 21. a system formed by the interaction of organisms and it's environment as an ecological unit 22. an animal that eats both plant and animal matter 23. to yield something, something produced

Down 2. a person or thing that decomposes 3. any of an order of typically flesh-eating mammals that includes dogs, foxes, bears, raccoons, and cats 4. the inner part or deep part of an animal or plant structure 5. trophic level of energy, an ecological pyramid illustrating the energy flow within an ecosystem 6. the part of the brain composed of the midbrain and medulla oblongated and connecting the spinal cord with the forebrain and cerebrum 7. a usually long and single nerve-cell process that usually conducts impulses from the cell body 8. the body of a neuron without its axon and dendrites 9. the cord of the nervous tissue that extends from the brain lengthwise along the back in the vertebral canal and carries impulses to and from the brain 13. food chains in an ecological community 17. proceeding from the will or from one's own choice or consent 18. a grayish or reddish granular cell with specialized processes that is the fundamental functional unit of nervous tissue 20. a person or a thing that consumes