Across
- 1. also called a evening star.
- 5. the largest planet in solar system.
- 10. proteins on the surface of cells.
- 15. the total mass of living material in an area.
- 16. How the characteristic is physically.
- 18. energy can be changed from one form to another.
- 20. type of white blood cell.
- 22. our sun is this.
- 24. very small microorganism.
- 27. a hole that caused by meteor hitting a planet.
- 28. the rock that hit the earth.
- 30. star at the center of our solar system.
Down
- 2. planet that have a famous ring.
- 3. force that pull by gravity.
- 4. planet named after the sea god.
- 6. moving around something.
- 7. The allele pair for each characteristic.
- 8. disease-causing organism.
- 9. produce from white blood cells to fight with pathogens.
- 11. planet that have enough oxygen and water for organisms.
- 12. amount of matter that make up an object.
- 13. planets that full of gas which is Jupiter,Uranus,Saturn and Neptune.
- 14. our galaxy.
- 17. the kind of planet that Mars and Earth are.
- 19. flammable, burn easily
- 21. Smallest terrestrial planet and closet to the sun.
- 23. the farthest planet from the sun.
- 25. time between 21 March -> 23 September.
- 26. planet that contain full of carbon.
- 29. something that both Saturn and Uranus have in common.