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Ecology Crossword Puzzle

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6 environment factor such as predation, disease and competition that depends on the number of members in a population per unit area
7 the process by which the structure of biological community evolves over time
8 orderly change that occurs in a place where soil remains after a communtiy or organisms has been removed
9 biotic or abiotic factor that restricts the number, distribution or reproduction of a population within a community
10 an animal that feeds on plants; a herbivore
11 is a geographical representation designed to show the biomass or bio productivity at each trophic level in a given ecosystem
12 a carnivore that feeds only upon herbivores
13 an animal that feeds on the dead organic maerial, especially plant detritus
14 a species that is an early occupant of newly created or distributed area
15 simplified model that shows a single path for energy flow through an ecosystem
16 stable mature, ecological community with little change in compositon of species
17 physical area in which organisms live
18 establishment of a comminity in an ara of bare rock or bare sand, where no topsoil is present
1 symbiotic relationship in which both organisms benefit
2 average weather conditions or objects based on a set of criteria that helps organize communicate and retain information
3 model that shows a single path for energy flow through an ecosystem
4 role, position of an organism in its environment
5 symbiotic relationship in which one organism benefits and the other is neither helped nor harmed
6 environmental factors such as storms and extreme heat or cold, this affects populations regardless of their density
19 scientific study of all the inerrelationships between organisms and their environment
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