carbon cycle Flashcards
4.10
1
Q
how is carbon taken out of the atmosphere?
A
in the form of carbon dioxide by plants to be used for photosynthesis
2
Q
how is carbon dioxide passed onto animals and microorganisms?
A
by feeding
3
Q
how is carbon returned to the atmosphere?
A
carbon dioxide by plants, animals and microorganisms by respiration
4
Q
how can carbon be turned into fossil fuels?
A
if animals and plants die in conditions where decomposing microorganisms are not present and carbon in their bodies can be converted, over millions of years and significant pressure into fossil fuels
5
Q
what happens when fossil fuels are burnt?
A
the carbon combines with oxygen and carbon dioxide is released into the atmosphere
