Across 2. Means to disappear. 10. Phase change, liquid to solid. 12. A description of matter. 14. When an organism copies its physical features to match its environment. 15. No more present in its natural habitat. 18. Allele that is weak and hides behind the stronger one. 20. When organisms "best suited" for their environment survive long enough to have babies that may have babies (Survival of the fittest). 22. When an organism drops its temp, may not eat and goes to sleep in the summer. 23. The amount of mass per volume. 24. Measure of central tendency, the most repeated number. 27. When an organism drops its temp, may not eat and goes to sleep in the winter. 29. One half of a trait; one is contributed from each parent for each trait an organism has. 30. The component of a trait. 31. State of matter, indefinite shape and indefinite volume. 35. Phase change, liquid to gas. (natural heat) 36. When an organism travels for resources. 39. Another term for solution. 41. State of matter, definite shape and definite volume. 43. Phase change, solid to liquid. 44. Speed with direction. 45. Anything with mass and volume. 47. In a solution, the part that is being dissolved. 48. Measure of central tendency, found by subtracting the smallest number from the biggest one.

Down 1. Born with it. 3. In a solution, the part already there. 4. Most likely to become endangered. 5. The ability to survive. 6. When behaviors are obtaining through observation or taught. 7. Phase change, gas to solid. 8. The action of matter. 9. Allele that is strong and masks the weaker one. 11. Phase change, solid to gas. 13. When people select the organisms that they want to breed (mate) based on specific desired characteristics. 15. Most likely to become extinct. 16. When traits are passed down from parent to offspring. 17. When the allele set has one each of the genotypic kind. (letters do not match).). 19. Is hunted for food. 21. State of matter, indefinite shape and definite volume. 25. Means " the same". 26. Actively hunts another. 28. A feature of behavior that helps an organism live long enough to have babies that may have babies. 32. Means to save. 33. When the allele set has both of the same kind of genotypic kind (both letters match). 34. A quality or characteristic that describes an organism. 36. The amount of matter (atoms) in an object. 37. Phase change, liquid to gas. (artificial heat) 38. Measure of central tendency, the middle number. 39. Means "different". 40. When an organism copies its physical features to match another. 42. The amount of space something takes up. 46. Measure of central tendency, found by adding all numbers and then dividing their sum by the number of numbers present.