Across
- 2. taken in by plant.
- 5. chemical reaction in plants.
- 10. green pigment found in plants.
- 11. made up of two or more types of atoms
- 12. dioxide gas needed for photosynthesis.
- 13. only made up of one type of atom
Down
- 1. a horizontal line on the periodic table
- 3. a group of two or more atoms joined together
- 4. contain chloroyphll absorbs light energy.
- 6. one of the products with oxygen.
- 7. gas produced from photosynthesis.
- 8. smallest part of an element
- 9. used to make steel