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Enriched Science Chapter 9 Part 1
Test Description: Chapter 9
Instructions: Answer all questions to get your test result.
1) Climax communities are not the same everywhere.
A
False
B
True
2) Nonliving things, such as rock, soil, and air are all part of an ecosystem.
A
False
B
True
3) Ecological succession can begin when seeds are carried to bare areas by birds or the wind.
A
False
B
True
4) Succession continues until it reaches a pine forest community.
A
True
B
False
5) The process of one ecological community gradually changing to another is which of the following?
A
ecological succession
B
community replacement
C
ecological replacement
D
community succession
6) Of the following, which is NOT a freshwater ecosystem?
A
pond
B
lake
C
stream
D
estuary
7) As eutrophication occurs, populations of algae grow. How does this speed up succession?
A
The algae use so much of the oxygen in the water that fish die, decay and add to the build up of soil.
B
The presence of the algae encourages sediment to drop out of streams into the pond.
C
The algae become soil
D
The growth of the algae causes pollution to increase.
8) If an existing ecosystem is destroyed, ________.
A
a climax community comes into existence
B
a different type of biome emerges
C
secondary succession occurs
D
primary succession occurs
9) As plants in a climax community die, ________.
A
they are replaced by plants of the same species
B
either a or b could occur
C
they are replaced by plants of a different species
D
no plants grow in their place
10) In which biome does drilling for oil and gas interrupt migration patterns?
A
grassland
B
taiga
C
desert
D
tundra
*select an answer for all questions
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