Ecosystems and Energy Relationships

Which of the following is NOT a component of the nitrogen cycle?

• Assimilation
• Fossil fuel combustion
• Nitrification
• Nitrogen fixation

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS2-3

What is the role of nitrifying bacteria in the nitrogen cycle?

• To convert atmospheric nitrogen gas into ammonium.
• To release CO2 back into the atmosphere.
• To convert ammonium into nitrites and nitrates.
• To break down organic compounds for energy.

Tags

NGSS.MS-LS2-3

How do biogeochemical cycles support life on Earth?

• By regulating the movement of non-essential elements within Earth's ecosystems.
• By regulating the movement of essential elements within Earth's lithosphere.
• By regulating the movement of essential elements within Earth's atmosphere.
• By regulating the movement of essential elements within Earth's ecosystems.

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS2-3

How do human activities impact the carbon cycle?

• By releasing CO2 back into the atmosphere.
• By converting atmospheric nitrogen gas into ammonium.
• By converting atmospheric CO2 into organic compounds.
• By burning fossil fuels and releasing excessive carbon back into the atmosphere.

Tags

NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

What are biogeochemical cycles?

• Processes that regulate the movement of non-essential elements within Earth's ecosystems.
• Processes that regulate the movement of essential elements within Earth's ecosystems.
• Processes that regulate the movement of essential elements within Earth's atmosphere.
• Processes that regulate the movement of essential elements within Earth's lithosphere.

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS2-3

How do legume plants contribute to the nitrogen cycle?

• By converting atmospheric CO2 into organic compounds.
• By converting atmospheric nitrogen gas into ammonium.
• By breaking down organic compounds for energy.
• By releasing CO2 back into the atmosphere.

How does the phosphorus cycle differ from the carbon and nitrogen cycles?

• Phosphorus does not have a significant atmospheric component.
• Phosphorus primarily occurs in aquatic ecosystems.
• Phosphorus is not essential for life on Earth.
• Phosphorus has a significant atmospheric component.

What is the final step in the nitrogen cycle?

• Assimilation
• Nitrogen fixation
• Nitrification
• Denitrification

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS2-3

Which of the following is NOT a component of the carbon cycle?

• Photosynthesis
• Fossil fuel combustion
• Respiration and decomposition
• Nitrogen fixation

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is the role of weathering in the phosphorus cycle?

• To release small amounts of phosphate ions.
• To break down organic compounds for energy.
• To release CO2 back into the atmosphere.
• To convert atmospheric nitrogen gas into ammonium.

Tags

NGSS.MS-ESS2-1