Carbon and Nitrogen Cycles

Front

What process converts nitrogen gas into a biologically useful (fixed) form?

Back

Nitrogen fixation

Front

Which organisms play the largest role in converting nitrogen into various usable forms and back to a gas form?

Back

bacteria

Front

How do animals get nitrogen to make important biological molecules?

Back

Consume other organisms

Front

Which of the following cannot fix nitrogen?

• lightning
• fertilizer production
• combustion
• rain

Back

rain

Front

Which of the following is not a possible process that results in ammonification? Options: photosynthesis, decomposition, nitrogen fixation, fertilizer production

Back

photosynthesis

Front

Carbon moves between which two reservoirs through the process of diffusion?

Back

hydrosphere & atmosphere

Front

What happens to carbon during the process of photosynthesis?

Back

CO₂ is taken up by plants

Front

All the gases surrounding Earth are known collectively as the...

Back

atmosphere

Front

The process of breathing in oxygen and releasing carbon dioxide into the air (or water) is...

Back

Respiration

Front

Which of the following best describes weathering and erosion?

• when it rains on rocks
• decay of dead organisms
• break down of rocks that wash into the water
• when a volcano erupts

Back

break down of rocks that wash into the water