Carbon and Nitrogen Cycles

Front

According to this diagram, animals get proteins from eating ______________

Back

plants

Front

According to this diagram, plants use nitrogen to make ________

Back

proteins

Front

When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide. Options: Water, Atmosphere, Sun, Air

Back

Atmosphere

Front

Which one of these does not add CO2 to the atmosphere? Options: cooking with gas, planting trees, burning wood, riding in a bus

Back

planting trees

Front

Organisms that need nitrogen to survive

Back

all living organisms

Front

How is nitrogen "fixed" into a usable form for plants?

Back

Through action of bacteria & lightning

Front

What part of the carbon cycle is represented by A? Options: photosynthesis, decomposition, combustion, cellular respiration

Back

combustion

Front

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

Back

respiration

Front

Decomposer

Back

Organism that breaks down dead organisms

Front

Which of the following removes carbon from the atmosphere? Options: Combustion, Respiration, Photosynthesis, Death

Back

Photosynthesis