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Across 1. A group of individuals of the same species that live in the same area at the same time. 4. The organism that a predator feeds upon. 7. This term refers to the number of individuals per unit area. (2 words) 8. The interaction between two different organisms in which one captures and feeds upon the other. 10. The number of deaths occurring in a given period of time. (2 words) 12. This term describes the range of area that is inhabited by a population. (2 words) 13. The number of individuals the environment can support over a long period of time. (2 words) 14. This survivorship curve indicates a constant death rate over the organism's life span. (2 words) 15. This survivorship curve indicates a low death rate in the early and middle stages of life, and a high death rate at the later stages of life. (2 words) 16. The study of human populations. 18. An organism that captures, kills, and eats another living organism. 19. This occurs when the members of a population are reproducing at a constant rate. (2 words) 21. This survivorship curve indicates a high death rate among the young. (2 words) 22. This is a graphical representation that shows the population of a country broken down by gender and age group. (3 words) 24. In this type of dispersion, the individuals are clustered together in groups. (2 words) 26. In this type of reproduction, an organism produces all of its offspring in a single event. (3 words) 27. The movement of individuals into a population. 28. A limiting factor that depends on population size. (3 words) 31. This type of curve on a graph represents exponential growth. (2 words) 32. The length of time an individual is expected to live. (2 words) 33. Patterns on a graph that show the likelihood of survival at different ages throughout the lifetime of an organism. (2 words) 34. In this type of dispersion, the location of one individual is independent of the location of the other individuals. (2 words) 35. The movement of individuals out of a population.

Down 2. A model of population growth in which growth slows or stops following a period of exponential growth. (2 words) 3. The organism that a parasite feeds on is called the _______. 4. An organism that lives in or on another living organism. 5. A term used to describe a dramatic change in birth and death rates in a country. (2 words) 6. The number of births occurring in a given period of time. (2 words) 9. A factor that affects all populations in similar ways, regardless of the size of the population. (3 words) 11. A space that an animal defends against encroachment by other individuals. 13. The interaction that occurs between organisms as they struggle to obtain the same limited resources. 17. In this type of reproduction, the organism produces a few offspring each year for several years. (2 words) 20. The amount by which a population's size changes in a given time. (2 words) 23. In this type of dispersion, individuals are separated by a fairly even distance. (2 words) 25. A factor that causes population growth to decrease. (2 words) 28. This term refers to the spatial distribution of individuals within the population. 29. Death rate and emigration will ______ the size of a population. 30. Birth rate and immigration will _____ the size of a population. 33. This type of curve on a graph represents logistic growth. (2 words)