Across
- 3. capable of being broken down by bacteria.
- 6. having characteristics that photograph very well
- 8. variety of life or living things.
- 11. tendency of plants to turn turn in response to light.
- 13. send by television.
- 14. of plant and animal life;connected with the processes of life.
- 16. the outer boundary of a figure or area
- 18. process by which plant cells make carbohydrates from carbon dioxide and water in the presence of chlorophyll and light,and release oxygen as a by-product.
- 19. instrument to indicate the speed of an automobile or other vehicle,and often the distance traveled.
- 21. something that indicates changes
- 22. communication without using speech,hearing,or sight.
- 23. broadcast by television.
Down
- 1. machine that produces photocopies
- 2. way of sending coded messages over wire by means of electrical impulses.
- 4. a story of a person's life written by them..
- 5. light over a long distance
- 6. instrument for recording the number of steps taken and thus measuring the distance traveled.
- 7. instrument that records earthquake data.
- 9. the scientific study of plant and animal life.
- 10. instrument for making distant objects appear closer.
- 12. an account of a person's life.
- 14. a large quantity of life or living things.
- 15. shown by a graph.
- 17. having to do with the electrical effects produced by light
- 20. instrument used for measuring temperature.