Across
- 2. Dwarf planet crosses another rotation
- 3. A relationship between organisms where one organisms benefits and the other is neither harmed nor helped
- 4. Scale a device used to measure an object's weight
- 10. of Matter The form matter exists in. Matter exists in 3 states:
- 13. orbit the sun
- 15. Spinning on axis
- 17. Huge collection of gas, dust, and billions of stars and their solar
- 18. Planet the 4 inner planets are earth mercury
- 19. The relationships between organisms in an ecosystem.
- 21. The collection of all the populations of species in an area including plants and other organisms.
Down
- 1. Light is bouncing off of a surface
- 5. The process that plants use to turn water, air, and sunlight into food for growth
- 6. how much heat is in something, and you experience it every day
- 7. a reflection of you but all black
- 8. small, rocky objects
- 9. the total movement of an object without any regard to direction
- 11. the tilt on earth
- 12. Natural, giant, glowing balls of gas
- 14. If light passes through a medium and items on the far side appear blurry
- 16. venus
- 20. the green pigment that plants use to make food during a process called photosynthesis