Across
- 1. a group of diseases caused by abnormal cell growth and reproduction
- 6. a process that changes the chemical composition of rock
- 8. a chemical that causes cancer
- 9. industrial use of living organisms to produce food, drugs, or other products
- 11. a cell organelle that stores chlorophyll
- 12. ability to float
- 14. organisms that live on or near the bottom of the ocean
- 15. a statement that all living things are composed of cells; a cell is the basic unit of structure and function; and all cells come from existing cells
Down
- 2. the method of using chemical symbols to identify the number of atoms of each element in a compound
- 3. green pigment that captures the energy of the sun
- 4. a characteristic that describes how the matter will change under certain conditions
- 5. tendency of a substance to increase in concentration as it moves through the food chain
- 6. the process cells use to obtain energy from food
- 7. the geologic point at which variety of life vastly increased about 550 million years ago
- 9. organisms that are used to assess the health of a water system
- 10. structure that surrounds a cell, providing a barrier between its environment
- 11. a continuous process in which cells grow, make copies of their chromosomes, and divide to form daughter cells
- 13. a basic unit structure and function of all organisms