Across
- 2. a relationship between two species in which both species benefit.
- 4. a change in the size of a population over a given period of time
- 5. When a population becomes infected with something it spreads quickly in a crowded area(Densely packed together) Higher Death rate in Dense populations due to Limited Resources, Predation and Disease
- 7. the organism the parasite takes its nourishment from
- 8. occurs when each species uses less of the niche than it is capable of using
- 9. the species physical use of it's habitat, the environmental factors necessary for species' survival and all of the species interactions with an organism. the unique position occupied by a species
- 12. an organism that feeds on another organism.
- 13. the maximum number of offspring each member of a population can have
- 15. a relationship in which two species live in close association with each other
- 16. the fastest rate a species' population can grow
- 19. the average time it takes a member of the population to reach the age when it reproduces.
- 20. a certain proportion of the population dies regardless of the populations' density; affects all members in a uniform way, Severe Weather and Natural Disasters are examples of these types of events
- 23. a close relationship between two species in which each species provides a benefit to the other
- 25. an area defended by one or more individuals against other individuals
- 27. the relationship between two species in which both species attempt to use the same limited resource such that both are negatively affected by the relationship
- 30. the organism that the predator hunts.
- 31. a type of barnacle found only in the upper level of the zone when competition is present; otherwise it is found at deeper levels
- 32. the pattern of distribution or arrangement of its individuals within a given amount of space
Down
- 1. the largest population that an ecosystem can support
- 3. a particular natural resource, that when limited, determines the carrying capacity of an ecosystem for a particular species
- 6. the interaction between predator and prey.
- 10. a relationship between two species in which one species benefits from the other species, and the other species is harmed
- 11. an interaction between two organisms in which one organism kills and feeds on the other organism
- 14. the location where an organism lives.
- 17. species in close relationships evolve adaptations that reduce the harm or improve the benefit of the relationship
- 18. the number of individuals of the same species that live in a given unit of area
- 21. when members of different species use some of the same resources.
- 22. Increase in number or size, at a constantly growing rate; Populations grow faster and faster
- 24. a relationship between two organisms in which one organism benefits and the other is unaffected
- 26. a relationship in which one species benefits and the other species is neither harmed nor helped
- 28. all the members of a species that live in the same place at the same time
- 29. an organism that lives in or on another organism and feeds on it