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Section 1.1
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1
Which of the following make up the abiotic parts of an ecosystem?
A)bacteria, plants, protists
B)animals, bacteria, fungi
C)light, oxygen, nutrients
D)bacteria, nutrients, water
2
Symbiosis is…
A)one organism consuming another for food.
B)two different species living in close association with each other.
C)two or more organisms competing for the same resource.
D)two or more organisms living together with one organism always being harmed.
3
Other than Earth, no other planet in our solar system is known to have a(n)…
A)atmosphere
B)biosphere.
C)hydrosphere
D)lithosphere
4
The biosphere’s most vital abiotic cycle is…
A)the carbon cycle.
B)the nitrogen cycle.
C)the phosphorus cycle.
D)the water cycle
5
What nutrient is believed to be the main cause of eutrophication in Ontario lakes?
A)nitrogen
B)phosphorus
C)carbon
D)sulphur





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