Biogeochemical Cycles - Environmental Science Class

What is the most abundant gas in the atmosphere?

• hydrogen
• oxygen
• helium
• nitrogen

Nitrogen that is not combined with other elements and found in the atmosphere as gas is _____.

• free nitrogen
• nitrogen compounds
• ammonia
• nitrates

Tags

NGSS.MS-PS1-1

The type of nitrogen that can be used by producers is called _____.

• free nitrogen
• nitrous oxide
• nitrogen gas
• nitrogen compounds

What happens during the process of nitrogen-fixation?

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

Tags

NGSS.MS-LS2-3

NGSS.MS-ESS2-1

What happens during the process of denitrification?

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

Tags

NGSS.HS-LS2-3

Which process removes carbon from the atmosphere?

• combustion

• cellular respiration

• photosynthesis

• decomposition

Where is carbon stored in the environment?

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

Tags

NGSS.MS-LS2-3

NGSS.MS-ESS2-1

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

Why do living things need nitrogen?

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