Across
- 5. — An animal hunted by a predator.
- 6. — Two or more atoms bonded together.
- 10. — Harmful materials entering the environment.
- 11. — Melted rock beneath Earth’s surface.
- 13. — A substance made of one type of atom.
- 15. — The place where an organism lives.
- 16. — A substance made from different elements combined.
- 17. — A naturally formed solid made of minerals.
- 18. — Melted rock that reaches Earth’s surface.
- 21. Chain — A path showing how energy moves through organisms.
- 22. — Preserved remains or traces of ancient life.
- 24. — Anything that has mass and takes up space.
- 26. — An organism that breaks down dead matter.
- 27. — The movement of rock or soil by wind or water.
- 28. — An animal that hunts other animals.
Down
- 1. — Average weather over a long time.
- 2. — A substance with a pH above 7.
- 3. — A group of the same species living together.
- 4. — An organism that eats other organisms.
- 7. — Living things and their environment working together.
- 8. — A naturally occurring inorganic substance.
- 9. — Matter with no definite shape or volume.
- 12. — The basic unit of matter.
- 14. — An organism that makes its own food.
- 17. — A process where substances change into new substances.
- 19. — A substance with a pH below 7.
- 20. — The process plants use to make food from sunlight.
- 23. — Matter with a definite shape and volume.
- 25. — An opening in Earth’s crust where magma escapes.
- 27. — A shaking of Earth’s surface caused by movement underground.