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Across 3. A soil-like material composed of vegetable matter 8. One half of the earth 9. Fine sand that builds up on the bottom of the rivers, lakes, and other bodies of water 10. Animals without backbones, or spines

Down 1. People who study about animals 2. Animals that only eat plants 4. Relating to the warm areas near the equator 5. Organisms with a hard shell to protect there boneless, soft bodies 6. Land movement caused by earthquakes, volcanoes, and similar activity 7. Chemicals used to kill insects