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193421
The carbon cycle and Decomposition
Descripción
GCSE (Biology module 2) BIOLOGY Mapa Mental sobre The carbon cycle and Decomposition, creado por pwincess_sana97 el 05/09/2013.
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biology
biology module 2
biology
biology module 2
gcse
Mapa Mental por
pwincess_sana97
, actualizado hace más de 1 año
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pwincess_sana97
hace casi 11 años
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Resumen del Recurso
The carbon cycle and Decomposition
The whole thing is powered by photosynthesis
In photosynthesis plants convert the carbon from CO2 in the air into sugars.
Plants then incorporate this carbon into other carbohydrates & fats &proteins
carbon compounds are passed through the animal and food chain through eating
Both plants& animals respire when the organism is alive - releases CO2 back in the air
Plants &animals eventually die &decay.
they are then broken down by bacteria and fungi in the soil
these decomposers release CO2 back into the air by respiration as they break down the material
over millions of years, material from dead animals &plants turn into fossil fuels - coal and oil
when fossil fuels are burnt CO2 is released back into the air
recycling carbon & other nutrients takes longer in waterlogged soils than in well-drained soils.
Bcuz bacteria & fungi that decompose organic material need oxygen to respire &produce energy.
waterlogged soils don't have much oxygen
decomposers have less energy &work more slowly.
Nutrient recycling takes longer in acidic soil than in neutral.
bcuz extremes of pH slow down the reproduction of decomposers or kill them
Carbon is also recycled in the sea
species make shells made of carbonates
when the organisms die the shells fall to the ocean floor
eventually forming limestone rocks
the carbon in these rocks returns to the atmosphere as CO2 - when weathering takes place in rocks or during a volcanic explosion
Recursos multimedia adjuntos
2278_what_are_the_parts_of_a_whelk_shell (image/jpg)
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