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5 Cards in this Set

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  • Back
What causes decay? (2 marks)

Decomposers which are bacteria and fungi


What conditions allow decomposers to work best? (3 marks)


Lots of oxygen (aerobic conditions)
Moist
Warm



Why is decay important? (1 mark)

It allows nutrients to be recycled


What happens during the carbon cycle? (7 marks)


*Plants take in carbon dioxide from the atmosphere by PHOTOSYNTHESIS
*Plants and animals give out carbon dioxide by RESPIRATION
*Plants and Animals DIE
*Bodies’ are DECAYED by decomposers.
*Decomposers RESPIRE releasing carbon dioxide
*Carbon found in plants and animals is passed on by FEEDING
*Some carbon dioxide is ABSORBED by OCEANS
*Some dead plants and animals can be FOSSILISED which locks in carbon.
*When FOSSIL FUELS are COMBUSTED the carbon is released back into the atmosphere


What does a diagram of the carbon cycle look like? (7 marks)