Biogeochemical Cycles

Which process takes Carbon Dioxide from the air and converts it into a form of carbon used by living things?

• Precipitation
• Photosynthesis
• Respiration
• Bioremdiation

Carbon dioxide is added to the atmosphere by

• Burning fossil fuels 
• Cellular respiration
• Decomposing organic matter
• All answers are correct

The nitrogen found in the atmosphere is not in a form that plants or animals can use.  What converts it into a usable form?

• Bacteria
• Photosynthesis
• Decomposition of organisms
• Fungi

What does not produce carbon dioxide?

• Photosynthesis
• Burning Fossil Fuels
• Animal respiration
• Plants decaying

What cycle is demonstrated in the diagram?

• TheLlife cycle
• The Water cycle
• The Carbon cycle
• The Nitrogen cyckle

The process represented by arrow 4 is __

• transpiration
• precipitation
• evaporation
• condensation

78% of the atmosphere is nitrogen

• True
• false

What are all living things made of?

• Soil
• Oxygen
• Carbon
• water

Where is most water found on Earth?

• glaciers
• lakes
• rivers
• oceans

Where is most of the phosphorus on earth stored?

• ocks
• water
• soil
• atmosphere