Carbon & Nitrogen Cycle

Which of the following best describes the movement of carbon in photosynthesis?

• From carbon dioxide gas to solid carbohydrates

• From sea water to carbon dioxide gas

• From organic molecules to carbon dioxide gas

• From organic molecules to rocks

Tags

NGSS.MS-LS1-6

Which of the following add carbon dioxide gas to the atmosphere?

• volcanoes
• combustion of fossil fuels
• cellular respiration

• all of these

Tags

NGSS.HS-LS1-7

NGSS.HS-ESS2-6

NGSS.HS-LS2-5

What is happening at the arrow labeled 1?

• respiration: releasing CO₂
• decomposing: CO₂ in the soil

• photosynthesis: absorbing CO₂
• combustion: releasing CO₂

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Features of ecosystem that are alive or were once alive.

• biotic

• abiotic

• inbiotic

• biography

What percentage of the atmosphere is composed of nitrogen gas?

• 13%

• 34%

• 78%
• 21%

All of the carbon in existence is continually recycled in the carbon cycle

• True
• False

Tags

NGSS.MS-LS2-3

NGSS.MS-ESS2-1

Which of the following removes carbon from the atmosphere?

• Combustion
• Respiration
• Photosynthesis
• Decomposition

Tags

NGSS.MS-LS1-6

Organisms that do not decompose can be buried and become what?

• water
• nutrients
• air
• fossil fuels

Tags

NGSS.MS-ESS2-3

What is the role of denitrifying bacteria

• change nitrate back into nitrogen gas

• change nitrogen gas into nitrate

• absorb carbon dioxide in the soil

• release oxygen gas into the atmosphere

Tags

NGSS.MS-LS2-3

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

• change Nitrogen gas into Nitrate

• Return the nitrogen compounds to the soil

• Turn nitrogen into water

• Turn nitrate into nitrogen gas