7th Grade Science Vocabulary

5. An organelle (in green plant cells) a that contains chlorophyll and in which photosynthesis takes place.
8. The system that is a network of nerve cells and fibers which transmits nerve impulses between parts of the body.
10. The process of breaking down food.
11. the orientation of a plant or other organism in response to light, either toward the source of light.
12. a change or the process of change by which an organism or species becomes better suited to its environment.
13. The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.
14. The process by which the structure of a biological community evolves over time after a natural disaster.

1. The smallest unit of life (contains organelles and makes up tissues)
2. A storm with a violent wind that forms over warm ocean water.
3. the galaxy that includes our Solar System
4. The system that is a network of organs and tissues that help you breathe. It includes your airways, lungs and blood vessels.
6. An organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material.
7. The tendency toward a relatively stable equilibrium between interdependent elements.
9. The fifth planet from the Sun and the largest in the Solar System.
10. A twisted ladder called a double helix that contains all of the information about an organism. The blueprints of an organism.