1					2				3
							4
		5																								6
																								7
8										9
10			11		12
			13
									14																					15
																												16
							17
							18									19
														20
21												22								23
																							24
		25
																					26
											27															28
						29
					30
														31
		32																						33

Across 1. uses transmitted or reflected light in order to magnify the image. 5. A factor that is change or varied in the experiment. 10. uses a beam of electrons and a system of electron-focusing lenses to obtain images. 13. Scientists give reports truthfully acknowledges sources of information. 14. are the smallest of the formed components of the blood. 18. is he liquid medium that is constantly flowing throughout our body. 20. Scientists do not easily jump to a conclusion. 21. is the process of giving logical meaning to an observation. 23. are the smallest blood vessels. 25. are thin-walled and floppy. 26. Scientists have the ability to spend more time or days of week to finish a task to get accurate results. 27. is used to see or magnify minute things that cannot be seen by the naked eye. 30. Scientists are humbe and do not boast about his/her achievements. 31. are the vast networks of small tubes that carry blood throughout the body. 32. Scientists think of possible alternative solutions to problems. 33. Is an amazing muscular organ.

Down 2. Are responsible for receiving used blood coming from all parts of the body. 3. Provides meaning or explanation. 4. Is produce by the vibration of the ventricles. 6. also known as erythrocytes are small, spherical enucleated, and biconcave cells. 7. or leucocytes are irregular in shape and are slightly larger that the red blood cells. 8. Is the result based from manipulated variable. 9. Is responsible for transporting materials throughout the entire body. 11. Scientists are willing to evaluate evidences presented in support of a conclusion. 12. Scientists do not believe in superstitions. 15. is a tentative answer or explanation of something that needs to be proven through scientific investigation. 16. Scientists record actual observations and data accurately. 17. properties of objects and things. 19. Scientists are sensitive to problems. 20. A factor that is kept the same. 22. Scientists never stops learning. 24. have a thick elastic walls to withstand the high pressure of blood. 28. is the liquid part of the blood. 29. Is produce by vibration of the valves.