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Chapter 15
Test Description: Study guide for chapter 15 test.
Instructions: Answer all questions to get your test result.
1) The population ............ is the number of invdividuals in a population.
A
density
B
size
C
habitat
D
niche
2) ............... is a form of symbiosis that benefits one species and harms the other.
A
parasitism
B
organisms
C
commensalism
D
mutalism
3) A ............ is a simple way of showing how energy, in the form of food, passes from one organism to another.
A
water
B
food chain
C
carrying capacity
D
food web
4) Changing nitrogen gas to nitrogen in the soil is called ..............
A
energy
B
competition
C
biotic
D
nitrogen fixation
5) The role or job of an organism in the ecosystems is a .............
A
habitat
B
biome
C
biosphere
D
niche
6) ............ is a very important abiotic factor and is the main compound in cell fluids.
A
water
B
air
C
soil
D
light
7) ........... factors are the non-living factors in an enviroment.
A
symbiosis
B
biotic
C
abiotic
D
energy
8) ........... is the study of interactions among organisms and their environment.
A
communities
B
ecosystems
C
populations
D
ecology
9) .......... is need for recyling matter.
A
water
B
energy
C
populations
D
decomposers
10) A .......... limits the number number of organisms in an environment.
A
carrying capacity
B
spacing
C
limiting factor
D
food chain
*select an answer for all questions
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