Biogeochemical Cycles

Which is NOT a process of the water cycle?

• precipitation
• freezing
• transpiration
• evaporation

The process of plants losing water through their leaves is called ____.

• condensation
• evaporation
• transpiration
• exhaling

What is the most abundant gas in the atmosphere?

• hydrogen
• oxygen
• helium
• nitrogen

Where are denitrifying bacteria found?

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

What is the only process that 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

Which cycle are fossil fuels (oil, coal, natural gas) part of?

• carbon

• water

• nitrogen

• phosphorus

What is the process of rain, snow, or hail falling from the sky?

• evaporation

• condensation

• precipitation

• runoff

Organisms that break down dead plants & animals and release nitrogen back into atmosphere...

• bacteria
• plants
• animals
• producers

Identify the cycle pictured.

• The Water cycle
• The Carbon cycle
• The Nitrogen cycle
• The Phosphorus cycle