Nitrogen and phosphorus cycle

Identify the cycle pictured.

• The Water cycle
• The Carbon cycle
• The Nitrogen cycle
• The Phosphorus cycle

Which of the following is known as the "sedimentary" cycle because its reservoir is sedimentary rock?

• Sulfur cycle
• Nitrogen cycle
• Phosphorus cycle
• Carbon cycle

How do animals get nitrogen?

• the atmosphere 
• eating other organisms
• rainwater
• lightning 

_____ brings phosphorous into our waterways. .

• precipitation
• runoff
• transpiration
• condensation

Plants and animals cannot use nitrogen directly from the air.

• True
• False

What role do decomposers play in the phosphorous cycle?

• absorb phosphorous 
• release phosphorous into atmosphere
• return phosphorous into the soil
• combustion

A correct path that nitrogen could take would be

• air -> animals -> plants -> bacteria

• animals -> air -> bacteria -> plants

• bacteria -> air -> plants -> animals

• air -> bacteria -> plants -> animals

Uses for phosphates include...

• ATP

• DNA and RNA

• Skeletons in vertebrates

• All of the above

After plants and animals contain nitrogen, what puts it back into atmosphere and soil?

• decomposition
• precipitation
• condensation
• bacteria

What process involves the capture and conversion of nitrogen into a form useable by plants?

• phosphate cycle

• dinitritification

• condensation

• nitrogen fixation