Across
- 4. air is made of this and carbon dioxide
- 7. release of water vapor mainly through the small openings in the underside of leaves
- 10. physical trait or behavior that helps an organism survive
- 12. this helps plants turn nutrients into sugars
- 13. plants need this and most don't like being crowded
Down
- 1. structures found inside an organisms body
- 2. plants response to water, gravity, light and touch
- 3. structures found outside of an organisms body
- 5. change in an environment that causes an organism to respond
- 6. studies animals
- 8. the reaction or change in behavior of an organism
- 9. helps plants make food and gives support
- 11. a basic need for a plant