Across
- 4. the lakes, oceans, rivers, and ice on Earth
- 5. the "top of the food chain" in the woodlands ecosystem we studied in class (two words with no spaces)
- 7. a tiny plant-like structure in the ocean that uses Earth's sunlight to make food
- 11. this breaks down dead plants or animals to return their nutrients back into the ecosystem
- 12. this uses sunlight to create its own food
- 13. the arrows in a food web are to show the transfer of _________
Down
- 1. the air and gases that surround Earth
- 2. the rocks, soil, and landforms of Earth
- 3. a large aquatic algae that seems more plant-like
- 6. this eats plants and animals
- 8. all of the plants, animals, and organisms on Earth
- 9. the "top of the food chain" in the aquatic ecosystem we studied in class (two words with no spaces)
- 10. the bay in California that we studied