Across
- 5. a place within an ecosystem where an organism lives
- 6. a close relationship between 2 or more organisms of different species that live in direct contact
- 10. the parts of the Earth and surrounding atmosphere where there is life
- 12. when a population is in ideal conditions with unlimited resources it grows in this pattern
- 13. the largest number of individuals of one species that an environment can support
- 16. one way of estimating population density
- 18. the study of all ecosystems on Earth
- 19. a group of organisms that have similar traits and are able to produce fertile offspring
- 22. a symbiotic relationship that benefits on species but does not benefit or harm the other
- 23. the larges number of offspring that can be produced when there are not limiting factors present
- 24. a symbiotic relationship where both partners benefit
- 26. anything that restricts the size of a population
Down
- 1. the number of offspring produced over a given period of time
- 2. the demand for resources, such as food, water, and shelter, in short supply in a community
- 3. all the organisms of the same species that live in the same area at the same time
- 4. the hunting of organisms for food
- 7. when the size of a population becomes larger than the carrying capacity
- 8. the instinctive seasonal movement of a population from one place to another
- 9. the number of individuals that die over the same period of time
- 11. what a species does in its habitat to survive
- 14. all the populations of different species that live together in the same area at the same time
- 15. a symbiotic relationship that benefits one species and harms the other
- 17. the size of a population compared to the amount of space available
- 20. a species that has died out and no individuals are left
- 21. a species whose population is at risk of extinction
- 25. a species that is at risk, but not yet endangered