Across
- 4. spacecraft designed to land on a planet’s surface
- 7. a system that removes waste from the body
- 9. resistant to sickness
- 14. this has no volume and adjusts to its container
- 17. large air mass with strong winds and rain
- 18. Square illustrates how offspring might be
- 19. muscles that move at command
- 22. similar cells working together to perform a function
- 23. an object orbiting another
- 25. the lowest layer of the atmosphere at 11 miles high
- 26. organ systems working together
- 29. dust, pollen, salt, and smoke are all __________
- 32. a protein that attacks specific foreign material
- 33. this is the second lowest layer of the atmosphere at 31 miles high
- 35. the ability to keep internal conditions stable
- 38. the amount of matter in a area
- 40. this has a volume and structure
- 41. Plates the dozen or so plates that make up the surface of the Earth
- 42. a system that carries nutrients throughout the body
- 43. a system that breaks down food, absorbs nutrients, and processes waste
- 44. a system that supports the body
- 45. groups of different tissues working together
- 46. a small dose of weakened pathogens that makes you immune to a disease
- 48. harmful materials added to the environment
- 49. any complete round or series of occurrences that repeats or is repeated
- 50. weather patterns over a long period of time
- 51. a system that instructs the body accordingly
Down
- 1. System groups of organs working together to meet the bodies needs
- 2. basic unit of organisms
- 3. takes blood away from heart
- 5. spacecraft the collects data from planet as it drops through the atmosphere
- 6. oxygen and materials are exchanged in the _____
- 8. the actual characteristics of an organism
- 10. the transfer of energy through the air or the water
- 11. Small funnel made from the meeting of two air masses
- 12. a celestial body moving in the sky, as distinguished from a fixed star
- 13. the highest and thickest layer of the atmosphere with the exosphere and the ionosphere
- 15. layers of gases protecting the earth
- 16. the genetic constitution of an organism
- 20. substance that the body uses to move, grow, and maintain homeostasis
- 21. the conditions of wind and temperature
- 24. this has a certain volume but adjusts its container
- 27. wavelike muscle contractions that move food through the body
- 28. a system that gets oxygen and releases carbon dioxide
- 30. muscles that move without a thought
- 31. the height of anything above a given planetary reference plane (like above sea level)
- 34. this is the third lowest layer of the atmosphere at 50 miles high
- 36. spacecraft passes planets without orbiting
- 37. Respiration process where cells use oxygen to release energy stored as sugars
- 39. energy that travels across distances as certain types of waves
- 42. the transfer of energy through direct contact
- 46. takes blood to the heart
- 47. a system that allows movement