Across
- 3. The sum of all chemical procceses that occur in an organism
- 5. the element that all living molecules are based on
- 7. to change as you grow and get older
- 10. maintaining a constant internal environment
- 13. reproduction where the parent makes a copy of itself
- 14. the exchange of oxygen and carbon dioxide, in humans it is also called breathing
- 15. a type of living creature, like a fern or a maple tree
Down
- 1. The study of living organisms
- 2. making a new organism that is similar to the first one
- 4. anything that causes a reaction or a change in an organism
- 6. the change in a species over a very long period of time
- 8. a living thing
- 9. the smallest unit of life
- 11. a type of living creature, like a panda bear or a parrot
- 12. the passing on of genetic information from one generation to the next