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science ch8 Test

Enter the letter for the matching Answer
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1.
Mutualism, commensalism, and parasitism are the three types of
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2.
The behaviors and physical characteristics of species that allow them to live successfully in their environment are called
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3.
An organism’s habitat must provide all of the following
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4.
Ticks feed on the blood of mice in a symbiotic relationship called
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5.
A lack of places to build nests is an example of ______ as a limiting factor for a population of birds
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6.
A population is all the members of one species living in a particular
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7.
Bees and flowers are _____ factors in an ecosystem
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8.
Prairie dogs, snakes, and grass make up a level of ecological organization called a(n)______
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9.
If food is scarce, it becomes a(n) ____ that prevents population growth
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10.
A group of antelope leaving the herd in search of better grassland is an axample of
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11.
A hawk building a nest on the arm of a cactus without hurting the cactus is an example of the symbiotic relationship called
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12.
An organism’s particular role in its habitat, or when and how it survives, is called its
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13.
All of the following are examples of limiting factors
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14.
To produce their own food, algae and plants use the abiotic factors sunlight carbon dioxide, and _____
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15.
Emigration
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16.
If you count 20 beetles in a garden measuring 5 square meters, the population density of the beetles is
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17.
The part of an ecosystem where an organism lives and feeds is called the organism’s______
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18.
An example of a predator adaptation
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19.
The type of succession that occurs in an area where an ecosystem has been disturbed, but where soil and organisms still exist, is called ____ succession
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20.
All the biotic and abiotic factors in an area together make up a(n) ______
A.
emigration
B.
a shark’s powerful jaws
C.
commensalism
D.
food, space, weather conditions
E.
4 beetles per square meter
F.
limiting factor
G.
A group of zebras breaking off from a herd decreases the size of the herd population through
H.
food, water, shelter
I.
community
J.
parasitism
K.
havitat
L.
secondary
M.
???symbiotic relationships
N.
adaptations
O.
water
P.
area
Q.
ecosystem
R.
biotic
S.
space
T.
niche
Type the Answer that corresponds to the displayed Question.
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21.
The series of changes that occurs after a disturbance in an existing ecosystem is called
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22.
The gray wolves in a forest
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23.
The series of changes that occur in an area where no ecosystem previously existed is called
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24.
The struggle between organisms to survive in a habitat with limited resources is called
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25.
The smallest unit of ecological organization is a single
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26.
A biotic factor in the prairie ecosystem?
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27.
Population size generally increases if the birth rate is greater than the
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28.
The place where an organism lives and that provides the things the organism needs is called its
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29.
Water, sunlight, and soil are _____ in an ecosystem
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30.
The study of how things interact with each other and with their environment is called

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