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Vocabulary List 8
Test Description: Ecosystem Change Part 2 (18 Words)
Instructions: Answer all questions to get your test result.
1) Excessive populations in an area to the point of overcrowding, depletion of natural resources, or environmental breakdown.
A
natural selection
B
overpopulation
2) The changes that animals make to enable them to be better suited to live successfully in their ecosystem.
A
natural selection
B
overpopulation
3) The behaviors and physical characteristics of species that allow them to live successfully in their ecosystem.
A
adaptations
B
competition
4) An organism's role, or how it makes its living in the ecosystem.
A
prey
B
niche
5) The struggle between organisms to survive in their habitat with limited resources.
A
predation
B
competition
6) An interaction in which one organism kills and eats another.
A
competition
B
predation
7) The organism that does the killing in predation
A
predator
B
prey
8) The organism that is killed in predation.
A
prey
B
predator
9) A symbiotic relationship in which both species benefit in the relationship.
A
mutualism
B
parasitism
10) A symbiotic relationship in which one species benefits and the other is neither helped or hurt by the relationship.
A
commensalism
B
mutualism
11) A symbiotic relationship in which one organism lives on or inside another organism and harms that organism.
A
parasitism
B
commensalism
12) The organism that benefits in parasitism, the organism that lives on or inside another organism. (Flea, Tick, Heartworm)
A
parasite
B
host
13) The organism that the parasite lives on or inside and is hurt in the relationship called parasitism.
A
parasite
B
host
14) A gradual and natural change in an ecosystem over a long period of time.
A
ecology
B
succession
15) A series of changes that take place where no ecosystem has ever existed before. This happens where there is no existing soil (bare rock).
A
primary succession
B
secondary succession
16) The first species to populate a new ecosystem in primary succession, usually these are lichens or some type of moss.
A
pioneer species
B
parasite
17) A series of changes that take place after a disturbance has happened in an ecosystem (forest fire, hurricane, tornado, drought, farming, logging, mining) There is existing soil already in place.
A
primary succession
B
secondary succession
18) Scientists who study how all the biotic and abiotic factors in an ecosystem are related. These scientists study how organisms react to changes in their environment.
A
astronomer
B
ecology
*select an answer for all questions
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