Across
- 4. rocky ridge near the surface of an ocean
- 8. tiny living things that are too small to see with the human eye
- 9. experts who provide advice
- 10. group of plants or animals that share qualities that can produce other plants or animals
- 12. open grassy land with only scattered trees
- 13. large marsh in Florida
Down
- 1. gas that plants use to grow during photosynthesis
- 2. structure with glass walls used to grow plants
- 3. mixture of gases that surround our planet
- 5. tiny ocean animals that protect themselves by making hard out skeletons
- 6. green plants use CO2 to createw energy, plants give off oxygen
- 7. life supporting layer of gases, water, rocks, and soil
- 11. low, wet land covered in grass