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- 1. Multiple Choice
Which Statement is supported by evidence in the model?
Materials are cycled through living organisms only
Materials are cycled through consumers only
Materials are cycled through living and non living components of the ecosystem
Materials are cycled through the physical factors of the environment through evaporation and condensation.
- 2. Multiple Choice
According to the model, plants use nitrogen to make what?
bacteria
proteins
plants
decomposers
- 3. Multiple Choice
What does the letter A represent in the model?
Gas
Carbon Dioxide in the atmosphere
Clouds
Nitrogen in the atmosphere
- 4. Multiple Choice
The graph shows the amount of nitrate in various oceans from 1992 to 2010. Based on this data which ocean system has experienced an increase in populations nearby?
Arctic Ocean
Baltic Sea
Black Sea
Celtic Sea, Bay Of Biscay, Iberian Coast
Greater North Sea
- 5. Multiple Choice
Which of the following factors could result in an excess of nitrate in nearby bodies of water? (Click All that apply)
Cattle Grazing
Cropland
Forested Areas
poor drainage
- 6. Multiple Choice
How do animals get the nitrogen they need?
From the air they breathe
From the water they drink
From the food they eat
From the sun
- 7. Multiple Choice
A correct path that nitrogen could take would be _____
air -> animals->plants->bacteria
animals->air->bacteria->plants
air -> bacteria ->plants -> animals
bacteria ->air -> animals->plants
- 8. Multiple Choice
True or False:
Bacteria release nitrogen from dead organisms into the soil
True
False
- 9. Multiple Choice
Nitrates are poisonous to fish. What should you add more of to get rid of nitrates without having to change the water in your fish tank?
More fish
Nitrobacter bacteria
Nitrosomonas bacteria
Plants
- 10. Multiple Choice
What would happen to this nitrogen cycle if a virus killed all the bacteria?
Nitrogen would just keep on cycling
The cycle would stop
Plants would take over for the bacteria
Fish would grow more because there's no bacteria
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