Biology Crossword

4. When a gas moves from an area of high concentration to an area of low concentration..
5. An example of this is the sperm entering the cell.
8. The drug that causes smoking to be addictive.
9. The powerhouse of the cell.
11. Organs where nutrients are water from foods are absorbed.
13. The process of when animals go to sleep for a longer period of time during winter or cold weather..

1. The process of releasing energy using oxygen and glucose.
2. When two species contest against each other for food.
3. The name of the first species in a food chain which uses photosynthesis.
6. The large area in a plant cell where cell sap is stored.
7. The name given of the phenomenon for living beings adapting to their environment.
10. What chloroplasts are made of for photosynthesis.
12. The muscle used to help the lungs breathe.
14. Where the ovules of a plant are stored.