Biogeochemical Cycles

What is the most abundant gas in the atmosphere?

• hydrogen
• oxygen
• helium
• nitrogen

Why do living things need nitrogen?

• To get energy
• To make amino acids
• To make proteins
• To make proteins AND amino acids

Where are denitrifying bacteria found?

• In the soil
• Root nodules
• In dead things
• In the atmosphere

Tags

NGSS.MS-LS2-3

What happens during the process of nitrogen-fixation?

• Nitrogen compounds turn into free nitrogen
• Free nitrogen turns into nitrogen compounds

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS2-3

What happens during the process of denitrification?

• Nitrogen compounds turn into free nitrogen
• Free nitrogen turns into nitrogen compounds

Tags

NGSS.HS-LS2-3

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

• combustion
• cellular respiration
• photosynthesis
• decomposition

Tags

NGSS.MS-LS1-6

Where is carbon stored in the environment?

• Fossil fuels
• Wood of trees
• Calcium carbonate (shells and bones)
• All of the above

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS2-3

What 2 things does a plant make during photosynthesis?

• oxygen, glucose
• glucose, carbon dioxide
• useable energy, glucose
• oxygen, carbon dioxide

Tags

NGSS.MS-LS1-6

What 3 things are made during cellular respiration?

• useable energy, water, glucose
• glucose, water, carbon dioxide
• oxygen, carbon dioxide, glucose
• carbon dioxide, water, useable energy

Tags

NGSS.MS-LS1-7

What is one way humans are moving more carbon into the atmosphere from other parts of the Earth system?

• Burning fossil fuels

• Eating less meat

• Walking to school/work

• Planting more trees

Tags

NGSS.MS-ESS3-5