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- 1. Multiple Choice
Which of the following is NOT a source of nitrates and phosphates into a river?
Fertilizers
Animal waste
Wastewater
Burning fossil fuels
- 2. Multiple Choice
True or False: Fertilizers used for growing crops always stay within the boundaries of the farm.
True
False
- 3. Multiple Choice
In a dead zone, _________ levels are really low such that living organisms are not able survive.
nitrogen
oxygen
fertilizer
carbon dioxide
- 4. Multiple Choice
Based on the diagram, which fish species is in a breeding zone with higher oxygen levels?
Fish Species 1
Fish Species 2
- 5. Multiple Choice
The long term effects of a dead zone includes all of the following except for
Fisherman may struggle to catch any fish.
The crops of farmers stop growing.
The health of the fish population declines.
There is an increase in the population of decomposers such as bacteria.
- 6. Multiple Choice
The size of dead zones will ________ with more nitrogen run-off.
Increase
Stay the same
Decrease
- 7. Multiple Choice
An increase in the amount of nutrients in a lake is known as
calcification
cellular respiration
eutrophication
photosynthesis
- 8. Multiple Choice
Fertilizer, sewage, and animal feces can wash in to water, leading to...
thermal pollution
eutrophication
photosynthesis
noise pollution
- 9. Multiple Choice
The natural process of eutrophication is accelerated when you add...
phosphates and nitrates
nitrates and oxygen
biodiversity
oil and heat
- 10. Multiple Choice
Which type of pollution can lead to harmful "algal blooms"?
thermal pollution
oil spills
nutrient pollution
bacteria
- 11. Multiple Choice
Within an aquatic ecosystem, which would be considered an abiotic factor
Fish
Algae
Dead snail
Nitrates
- 12. Multiple Choice
What nutrients increase the rate of algae growth and reproduction in aquatic ecosystems?
nitrates and phosphates
sulfates and ammoniates
philates and sulfates
phosphates and communicates
- 13. Multiple Choice
What causes eutrophication of a lake?
a dramatic drop in phosphate and nitrate levels
a dramatic increase in phosphate and nitrate levels
increased indicator tests taken at the lake
a high fish population in the lake
- 14. Multiple Choice
Which statement best explains this image?
The west coast is the source of the most nutrients due to colonization and development of land.
The midwest is the source of most nutrients due to farming and fertilizer use.
The east coast is the source of most nutrients due to flooding of fields.
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