MRSCGREN

4. A living thing that exhibits all the characteristics of life.
6. Unwanted materials produced by biological processes, excreted from the body.
7. A community of living organisms interacting with their physical environment.
9. The biological process by which organisms produce offspring.
13. The ability of an organism to change its position or parts of its body.
14. The ability to detect and respond to changes in the environment.
15. The process of increasing in size or developing over time.
16. The intake of food or nutrients to provide energy and materials for growth.

1. The removal of waste products from an organism's body.
2. A gas required by many organisms for respiration.
3. The process of breaking down glucose in cells to release energy in living organisms.
5. A gas produced during respiration and excreted by many organisms (two words).
8. A change in the environment that causes a response in an organism.
10. The power organisms need to carry out life processes, derived from food.
11. The basic unit of structure and function in all living organisms.
12. A group of tissues working together to perform a specific function in the body.