Across
- 4. All the living and nonliving things that interact in a specific area; a subdivision of the environment
- 7. the cells in the body that work together to fight disease
- 9. a substance used to kill microorganisms and cure infections
- 10. a substance made of weakened, killed, or partial pathogens and designed to protect the body from future invasions of that pathogen
- 11. the process where groups of organisms work or act together for common or mutual benefits
- 13. at the individual level, different types of the same trait; at the population level, normal differences found among individuals in a species
- 15. the process by which organisms produce new organisms of the same type
- 16. the process by which the organisms that are best adapted to a specific environment survive and produce more offspring that organisms that are not as well adapted
- 18. The struggle between organisms for the same limited resources in a particular area
Down
- 1. a resource that is not available in endless supply
- 2. all species are related and gradually change over time
- 3. the body’s ability to destroy pathogens before they cause disease
- 5. any trait that helps an organism survive and reproduce under a given set of environmental conditions
- 6. when bacteria evolve, withstand and survive through the effects of antibiotics
- 8. an organism that invades the body, causing disease
- 12. bacteria living in symbiosis with another organism or each other
- 14. The mechanism by which organisms adjust to new environments or to changes in their current environment
- 17. a close and long term interaction between to organisms of different species