Across
- 4. A fluid in the body that delivers air to body
- 6. a nerve cell
- 7. The hottest biome on earth
- 8. Anything living except plants and people
- 10. The air surrounding earth
- 11. In the title
Down
- 1. A living thing
- 2. examples are: grass and trees
- 3. The smallest unit that is vital to all life
- 5. a system of organs working together
- 9. A substance that causes a allergic reaction