Across
- 2. waste gas that tree produces that animals need
- 4. system that takes nutrients and oxygen to your cells
- 5. system that makes blood and also provides protection for vital organs
- 8. makes water, carbon dioxide, and ATP (energy)
- 9. system that breaks food down into smaller molecules
- 12. mass must be __ on either side of a chemical equation
- 14. made of a single type of atom
- 17. organisms without a nucleus
- 18. chromosomes contains genes that make proteins that determine our __
Down
- 1. reaction that makes surroundings hotter
- 3. controls what goes in and out of a cell
- 6. kingdom that has cells with walls but no chloroplast; decomposers
- 7. organelle that makes proteins
- 10. how animals get carbon inside them
- 11. made of similar cells
- 13. reproduction that makes clones
- 15. type of reaction that makes surroundings feel cooler
- 16. everything is made of this