What is the primary role of an indicator species in an ecosystem?
Indicator Species: How Different Species Indicate Pollution in the Environment

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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To provide food for other species
To indicate the presence or absence of pollution
To control the population of other species
To produce oxygen for the environment
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a common source of air pollution?
Combustion of fossil fuels
Natural disasters
Plant respiration
Photosynthesis
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which type of lichen can tolerate very low levels of air pollution?
Crusty lichens
Leafy lichens
Bushy lichens
All lichens
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the presence of black spot fungus on roses indicate?
Low levels of oxygen
High levels of carbon monoxide
Low levels of sulfur pollution
High levels of nitrogen pollution
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is eutrophication primarily caused by?
Low carbon dioxide levels
Excess nutrients in water
Lack of sunlight
High oxygen levels
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which aquatic invertebrate indicates clean water?
Bloodworms
Sludge worms
Stoneflies
Leeches
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do numerical data readings from sensors compare to indicator species?
They are more subjective
They provide immediate and detailed measurements
They are less accurate
They are slower to obtain
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