Nitrogen Cycle

Front

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.

Back

Materials are cycled through living and non living components of the ecosystem

Front

According to the model, plants use nitrogen to make what?

Back

proteins

Front

What does the letter A represent in the model? Options: Gas, Carbon Dioxide in the atmosphere, Clouds, Nitrogen in the atmosphere

Back

Nitrogen in the atmosphere

Front

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? Options: Arctic Ocean, Baltic Sea, Black Sea, Celtic Sea, Bay Of Biscay, Iberian Coast, Greater North Sea

Back

Celtic Sea, Bay Of Biscay, Iberian Coast

Front

How do animals get the nitrogen they need?

Back

From the food they eat

Front

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

Back

air -> bacteria -> plants -> animals

Front

Bacteria release nitrogen from dead organisms into the soil

Back

True

Front

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?

Back

Plants

Front

What would happen to the nitrogen cycle if a virus killed all the bacteria?

Back

The cycle would stop