Across
- 5. Stiff, sticky, fine-grained earth that is usually red or yellow.
- 6. Heat energy coming from a big ball of gas that we see in the sky during the day.
- 7. ________ is where the fossil is found and is proof of the organism it represents.
- 8. A fossil is evidence of a past ____________.
Down
- 1. Heat energy that occurs when things are rubbed together.
- 2. A fertile soil of clay and sand containing humus.
- 3. The upper layer of earth in which plants grow.
- 4. Heat energy that is created when something is on fire.