Across
- 1. the basic unit of structure and function in an organism
- 4. an organism that lives on or in another organism
- 6. generation the first generation of offspring
- 7. a process of change, such as from a human baby, to an adolescent, to an adult
- 11. resource a product of the environment that is used by humans or other organisms
- 12. a characteristic of an organism that promotes its survival in a certain environment
- 14. the process of turning productive land into deserts
- 16. the change in species over time
- 17. the organism that is affected by a parasite
Down
- 1. capacity the number of individuals an ecosystem can support
- 2. anything that causes a response
- 3. the clearing away of forests
- 4. a harmful material that is released into the environment
- 5. the wise use of natural resources
- 8. generation the parental generation
- 9. the differences that exist naturally among the members of a species
- 10. the permanent dying out of a species or larger classification of organisms
- 13. the practice of harvesting fish at a rate faster than the population can renew its numbers
- 15. an area of land that remains wet for all or part of the year