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Ecology (Natural Cycles)
Test Description: Natural Cycles and abiotic factors
Instructions: Answer all questions to get your test result.
1) Which natural cycle involves bacteria fixation?
A
O2 /CO2
B
None
C
Water
D
Nitrogen
2) Which natural cycle involves infiltration?
A
Nitrogen
B
None
C
Water
D
O2 /CO2
3) What is transpiration?
A
Water evaporated from a lake
B
Water released by animals
C
Water released from plants
D
Movement of water from one plant to another
4) What is run-off?
A
Water filtering into the ground and becoming groundwater
B
Water collected in a lake
C
Water falling from the sky
D
Water flowing down the land to another water source
5) Which is breathed by plants?
A
O2
B
CO2
C
Both O2 and CO2
D
Nitrogen
6) Which is exhaled by animals?
A
O2
B
Both O2 and CO2
C
CO2
D
Nitrogen
7) Decaying organisms give off...
A
O2
B
CO2
C
Both O2 and CO2
D
Nitrogen
8) What organism fixes nitrogen?
A
Virus
B
Plants
C
Worms
D
Bacteria
9) When do natural cycles end?
A
At the end of a month
B
Never
C
At the end of the day
D
After 2 years
10) What is the chemical symbol for nitrogen?
A
N2
B
N1
C
NITRO
D
NT
*select an answer for all questions
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