Across
- 3. organism containing genetic material artificially transferred from another species
- 5. air surrounding the Earth
- 7. a microscopic infectious agent that replicates only within the cells of living hosts
- 9. a process that occurs when gases in Earth's atmosphere trap the Sun's heat
- 10. a chemical substance that can inhibit or destroy the growth of bacteria and other microorganisms
Down
- 1. an organism that lives on or in an organism of another species from the body of which it obtains nutrients
- 2. a group of microscopic, one-celled organisms, some of which are involved in infectious diseases, fermentation, and decay.
- 4. a system formed by the interaction of a community of organisms with their environment.
- 6. the introduction of harmful substances or products into the environment
- 8. having the effect of a poison