Carbon and Nitrogen Cycles

According to this diagram, animals get proteins from eating ______________

• decomposers

• bacteria

• plants

• sunlight

According to this diagram, plants use nitrogen to make ________

• bacteria

• proteins

• animals

• decomposers

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.

• Water
• Atmosphere
• Sun
• Air

Which one of these does not add CO2 to the atmosphere?

• cooking with gas
• planting trees
• burning wood
• riding in a bus

Organisms that need nitrogen to survive

• only plants
• only animals
• only bacteria
• all living organisms

Tags

NGSS.MS-LS2-1

How nitrogen is "fixed" into useable form for plants

• only through action of bacteria

• only through lightning

• through action of bacteria & lightning

• through photosynthesis

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What part of the carbon cycle is represented by A?

• photosynthesis

• decomposition

• combustion

• cellular respiration

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What part of the carbon cycle is represented by cow releasing CO2 back into the atmosphere?

• photosynthesis

• decomposition

• respiration

• combustion

What is a decomposer?

• Organism that makes its own energy
• Organism that breaks down dead organisms
• Organism that eats other organisms for food & energy

Tags

NGSS.MS-LS2-3

Which of the following removes carbon from the atmosphere?

• Combustion
• Respiration
• Photosynthesis
• Death

Tags

NGSS.MS-LS1-6