Across
- 4. What fossil shows the shape or impression of an organism?
- 5. What do we call the amount of water vapor in air?
- 7. What type of rock are fossils usually found in?
- 9. Which natural satellite revolves around Earth?
- 10. What is the long-term pattern of weather called?
Down
- 1. Which instrument measures temperature?
- 2. What protects Earth from harmful solar radiation?
- 3. Which biotic factor makes its own food?
- 6. Which gas is most abundant in Earth’s atmosphere?
- 8. What do we call the living components of an ecosystem?