Across
- 2. something that is completely different from another thing
- 3. very tiny living organisms
- 4. having to do with veins or vessels that carry fluid throughout an organism
- 5. thainga that are avalable and ready to be used
- 7. unlike other things
- 8. the science that deals with how things are made up and how they change when they interact with other things
- 11. the act of taking in oxygen
- 15. the gree substance found in almost all plants
- 17. parts of the plant's cells in which photosynthesis takes place
- 18. substance that gives color to plant or animal tissues
Down
- 1. a small amount of matter formed by combining 2 or more atoms
- 6. something related to the make up of substances
- 9. the state of being
- 10. the thing that is necessary for something to be whole or to do its job
- 12. process by which a green plant uses the sun'e energy to make food for the plant
- 13. simple sugar
- 14. the result of putting things together
- 16. something that is absolutely necessary