ecological cycles of matter

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

• Water
• Atmosphere
• Sun
• Air

What does not produce carbon dioxide?

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

In what process is Carbon transformed into chemical energy?

• Photosynthesis
• Respiration
• Primary Production
• Secondary Production

What is happening at 1?

• respiration: releasing CO2
• decomposing CO2 in the soil
• photosynthesis: absorbing CO2
• turning CO2 from the atmosphere into organic molecules

Why is the carbon cycle important?

• It continuously reuses and recycles carbon in the ecosystem
• It shows how animals to digest food
• It takes nitrogen and oxygen out of the atmosphere
• It isn't

What number represents combustion in this diagram?

• 1
• 2
• 3
• 4

What number would represent photosynthesis in this
diagram?

• 1
• 2
• 3
• 4

Which of these is an example of precipitation?

• snow
• air
• clouds
• vapor

What is is called when water turns into a vapor?

• EVAPORATION
• PRECIPITATION
• TRANSPIRATION

What is it called when plants give off water vapor as a waste product?

• condensation
• evaporation
• sublimation
• transpiration