Obj 4.9

1.CO2 from Atmosphere. .03 of atmosphere
Photosynthesis – reducing the atmosphere CO2



2.Producers eaten by primary consumers.
PC takes in the carbon from the producer to put back together its own body materials (grows)
Primary Consumers eaten by secondary consumer..etc




3.Each organism carries out the process of respiration.
respiration adds CO2to the atmosphere.
All organisms are putting carbon into the atmosphere through respiration



4.Death of organisms
Organic molecules that remain are broken down by the decomposer organism (bacteria and fungi) results rerelease of CO2 back to atmosphere



5. Fossil fuel (compression and pressure of animals) results in formation of oils and coals. Which are combusted to release co2
e.g. 1. industrial/motor vehicle
2. Naturally: lightning striking vegetation – forest fires and grassland fires.