Download Chapter 8 and 9 vocabulary Crossword and Word Search

Environmental Science Chapter 8 & 9 Vocabulary
Name: _____________________________
Class: _____________ Date: __________
Across
8. An area defended by one or more individuals against other individuals.
10. The maximum number of offspring that each member of a population can produce.
12. A relationship in which different individuals or populations attempt to use the same limited resource.
15. All the members of a species living in the same place at the same time.
16. The number of babies born each year per 1,000 women in a population.
21. The maximum population that an ecosystem can support indefinitely.
23. The basic facilities and services that support a community.
25. The average time it takes a member of a population to reach the age when it reproduces.
27. The study of populations, most often referring to the study of human populations.
28. The process of people moving from rural areas to cities.
29. A relationship in which one species benefits and the other species is neither harmed nor helped.
30. The organism the parasite takes its nourishment from.
Down
1. A model that describes how these changes in a population can occur.
2. One organism eating another organism (predator/prey).
3. The movement of individuals between an area.
4. A close relationship between two species in which each species provides a benefit to the other.
5. The number of individuals per unit area or volume.
6. The relative distribution or arrangement of a population within a given amount of space.
7. The relationship between a parasite and a host.
9. A population that grows at a logarithmic rate.
11. The distribution of ages in a specific population.
13. Birth rate minus the death rate.
14. The organism that feeds on another organism.
17. When a species uses less of a niche than they are capable of using.
18. Land that can be used to grow crops.
19. An organism’s location within an ecosystem.
20. A relationship in which two organisms live in close association.
22. The percentage of members of a group that is likely to survive to any given age.
24. The average number of years a person is likely to live.
26. The unique role of a species within an ecosystem.
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