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MaMaz GirL

MaMaz GirL

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same here i love bio but paper 3 its just too much.tell me which topics you would love to discus @ white girl
 
secret lover

secret lover

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carbon cycle-the process of photosynthesis,feeding,death,excretion and respiration lead to da cycling of carbon between living organisims and their evironment.Carbon moves into and out of da atmosphere mainly in the form of CO2.Green plants remove CO2 from theatmosphere as a result of their photosynthesis.
CARBONDIOXIDE+ WATER-----> OXYGEN +GLUCOSE
Plants convert CO2 into organic materials (carbohydrates,fats and protiens).Herbivores obtain carbon compounds by eating plants and carnivores by eating other animals.Animals and plants release CO2 back into air by the process of respiration.
GLUCOSE+OXYGEN------>CARBONDIOXIDE +WATER+ENERGY
When organisms die they decompose and decomposers also release CO2 into the air through the process of respiration to release energy(decomposition). Combustion (burning of fossil fuels ex..coal,oil or gas ) releases CO2 back into the air.
 
MaMaz GirL

MaMaz GirL

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secret lover said:
carbon cycle-the process of photosynthesis,feeding,death,excretion and respiration lead to da cycling of carbon between living organisims and their evironment.Carbon moves into and out of da atmosphere mainly in the form of CO2.Green plants remove CO2 from theatmosphere as a result of their photosynthesis.
CARBONDIOXIDE+ WATER-----> OXYGEN +GLUCOSE
Plants convert CO2 into organic materials (carbohydrates,fats and protiens).Herbivores obtain carbon compounds by eating plants and carnivores by eating other animals.Animals and plants release CO2 back into air by the process of respiration.
GLUCOSE+OXYGEN------>CARBONDIOXIDE +WATER+ENERGY
When organisms die they decompose and decomposers also release CO2 into the air through the process of respiration to release energy(decomposition). Combustion (burning of fossil fuels ex..coal,oil or gas ) releases CO2 back into the air.
Click to expand...
THANK YOU SO MUCH!!!!!!!!! :)
 
secret lover

secret lover

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NITROGEN CYCLE:nitrogen is needed to make proteins which is necessary for living organisms for growth and tissue repair.
The element nitrogen is a very unreactive gas and they hav to be changed into nitrogen componds (mainly nitrates) through the following process:
1.Lightning-high temperature due to lightning causes nitrogen and O2 to combine together to form oxides of nitrogen which dissloves in rain water to form nitrates.
2.Decay-Bacteria and fungi decompose dead organisms and waste to produce ammonia,and the nitrifying bacteria changes ammonia to mitrates.
3.Nitrogen fixation-N2 gas is converted to nitrates by some bacteria seen in the root nodules of leguminous plants and N2 fixing bacteria in the soil.
4.Nitrification-Nitryfying bacteria converts ammonium compounds to nitrates and nitrites.
5.Man-made fertilizers-NPK(nitrogen.phosphorous and potassium) fertilizers and farmyard manure add nitrates to the soil.
*Recycling notrogen(how it is released back)
1.Denitifying bacteria-They convert nitrates to nitrogen gas which excapes from the soil to atmosphere.
2.Leaching-nitrates are soluble and as rain water passes through the soil it dizzolves the nitrates and carries them to the deeper layers of the soil.This is Leaching.
 
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