12C Cycles Assesment

The diagram below shows which of the following cycles?

• Rock Cycle
• Carbon cycle
• Water Cycle
• Nitrogen cycle

Tags

NGSS.MS-LS2-3

During deforestation, large numbers of trees are cut down.�The trees are often burned to clear the land for agriculture.�These activities are likely to affect the carbon cycle by

• Increase the rate of photosynthesis
• Increasing the storage of carbon in sediments
• Increasing the rate of cellular respiration
• Increasing the release of carbon to the atmosphere

Tags

NGSS.MS-LS2-3

NGSS.MS-ESS2-1

The diagram below summarizes the nitrogen cycle. What role do plants play in this cycle?

• They convert nitrogen to ammonia.
• They absorb nitrates to make proteins.
• They make carbohydrates from nitrogen
• They take nitrogen from the air and use it for energy.

Tags

NGSS.MS-LS2-3

The diagram below represents the nitrogen cycle in a student's aquarium. Ammonia, nitrites, and, to a lesser degree, nitrates can be harmful to fish. The student wants to keep nitrogen in this aquarium cycling normally without having to continually change the water.
Which of the following should the student add more of to help remove nitrates and improve the natural cycling of nitrogen in this aquarium?

• Fish
• Plants
• Nitrobacter
• Water

Tags

NGSS.MS-LS2-3