Across
- 4. only eat producers
- 5. eat both producers and consumers
- 8. a deep valley in the ocean floor
- 11. the nonliving things in an environment
- 16. the ability to scratch another mineral
- 18. the race between populations to meet needs
- 20. a structure, usually made of piles of rock, that currents cannot move
- 21. the living things in an environment
- 23. animals that hunt for food
- 24. a group of the same species
- 26. information collected during a scientific investigation
- 28. how it reflects light
- 30. show how much energy is passed from one organism to another in a food chain
- 32. preserved remains of a living thing
- 34. all the populations that live and interact in an area
- 35. an attraction between two objects
- 36. only eat consumers
- 40. there is only enough food, water, shelter, and space to support a certain number of things
- 41. when something goes from a liquid to a gas
- 43. what is being hunted
- 45. creating less waste
- 47. the different types of species
- 50. everything that surrounds you
- 51. using resources carefully and not wasting them
- 53. items that nature cannot replace after they are used
- 56. land at the edge of the ocean
- 57. when something goes from a gas to a liquid
- 58. organizing things into different groups
- 60. the stages of development an animal goes through during its lifetime
- 61. any nonliving solid that has a crystal form
Down
- 1. a conclusion based on facts, evidence, or observations
- 2. changing old items into new items
- 3. a push or pull on something
- 6. a tool scientists use to identify and classify items
- 7. a natural solid that is made of one or more minerals
- 9. the setup you will compare all versions of the experiment to
- 10. taking items you would normally throw away and finding a new use for it
- 12. the color left behind when it is rubbed against tile
- 13. a large, round object that revolves around a star
- 14. a land area where all water flows to the lowest point
- 15. organisms that break down (decompose) wastes or remains of dead organisms
- 17. more than one overlapping food chains in an ecosystem
- 19. a steady flow of water in a regular pattern in the ocean
- 22. all the things in an experiment that can be changed
- 25. when a liquid in the sky gets heavy enough to fall to earth
- 27. a place where living things and nonliving things interact
- 29. anything useful or necessary for living beings that occur naturally on earth
- 31. a large, flat area on the deep ocean floor
- 33. the rise and fall in the water level of the ocean
- 34. organisms that can not make their own food
- 37. the study of the natural world
- 38. the underwater border of each continent
- 39. something that goes against motion
- 42. the role or function of something in an ecosystem
- 44. organisms that can make their own food
- 46. animals that hunt for dead organisms
- 48. this front uses red half circles
- 49. the transfer of energy from one organism to another
- 52. this front is red and blue
- 54. the steep area where the ocean rapidly gets deeper
- 55. the place where something lives in an ecosystem
- 59. this front uses blue triangles