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Ecology Sweeney
Test Description: Ecology
Instructions: Answer all questions to get your test result.
1) Which of the following will experience a pioneer species?
A
An established lake ecosystem
B
A new volcanic island
C
An untouched prarie ecosystem
D
A forest climax community
2) How does succession help to restore an ecosystem after a flood?
A
By decreasing the rate of evolution
B
By bringing extinct species back
C
By stopping other floods from happening
D
By increasing the amount of species in an ecosystem
3) If a tree falls in the forest, which of the following will probably take place
A
Lichens and moss will inhabit the area
B
Saplings and small plants will compete for light and space
C
There will be an increase in the amount of oxygen
D
There will be an increase in the rate of erosion
4) Which of the following ecosystems will change the least over time
A
A forest at climax
B
A new volcanic island
C
An ecosystem that has been through secondary succession
D
An ecosystem that has been through primary succession
5) After a volcano erupts it will take thousands of years to rebuild with new organisms this is :
A
Erosion
B
Succession
C
Weathering
D
Desertification
6) Why are tall hardwoods an example of a climax community?
A
Tall hardwoods block out light not allowing other organisms to grow
B
Tall hardwoods have more roots than other plants
C
Tall hardwoods have roots that spread accross the ground
D
Tall hardwoods use up all the water
7) What do plants like clover and legumes do for soil?
A
Add nitrogen and other vital compounds to the soil
B
Prevent wildfires from breaking out
C
Prevent animals from eating the soil
D
Break rocks into soil
8) A negative impact of building a dam is:
A
It reduces underground aquifers
B
It provides water to an entire community
C
It increases the amount of water a lake loses
D
It prevents sediment from moving downstream
9) A potential negative consequence to using water from an aquifer is:
A
The water is too expensive to clean
B
Pulling water from an aquifer causes subsidence of the ground
C
The soil expands and causes the ground to raise.
D
The water is dirty and can make people sick
10) Fertilizer that washes into lakes can cause problems
A
By causing in increase in algae that will feed too many fish
B
By causing an increase in algae and therefore a decrease in oxygen
C
By causing a decrease in algae
D
By causing plants to grow too quickly
*select an answer for all questions
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