Biogeochemical Cycles

What is the main source of carbon dioxide in the atmosphere?

• Burning fossil fuels

• Volcanic eruptions

• Photosynthesis

• Respiration by animals

What is the impact of burning fossil fuels on the carbon cycle?

• It releases stored carbon into the atmosphere

• It increases the amount of carbon in the ocean

• It causes carbon to be trapped in permafrost

• It decreases the amount of carbon dioxide in the atmosphere

Tags

NGSS.HS-ESS2-6

NGSS.HS-LS2-5

The process of plants losing water through their leaves is called ____.

• condensation
• evaporation
• transpiration
• exhaling

Tags

NGSS.MS-LS2-1

What is the most abundant gas in the atmosphere?

• hydrogen
• oxygen
• helium
• nitrogen

What is the only process that removes carbon from the atmosphere?

• combustion
• cellular respiration
• photosynthesis
• decomposition

Tags

NGSS.MS-LS1-6

Organisms that break down dead plants & animals and release nitrogen back into atmosphere...

• bacteria
• plants
• animals
• producers

Tags

NGSS.MS-LS2-3

How does carbon dioxide leave the atmosphere?

• Through transpiration
• Through photosynthesis
• Through factory emission
• Sunlight

Tags

NGSS.MS-LS1-6

How does carbon dioxide leave the atmosphere?

• Through transpiration
• Through photosynthesis
• Through factory emission
• Sunlight

Tags

NGSS.MS-LS1-6

Organisms use nitrogen to form

• carbohydrates and lipids
• proteins and lipids
• lipids and nucleic acids
• proteins and nucleic acids

Tags

NGSS.MS-LS3-1

The nitrogen found in the atmosphere is not in a form that plants or animals can use.  What converts it into a usable form?

• Bacteria
• Photosynthesis
• Decomposition of organisms
• Fungi

Tags

NGSS.MS-LS2-3