captures light energy using pigments such as chlorphyll and converts low energy substances such as co2 and h20 into high energy carbohydartes such as proteins and lipids

respiration releases energy captured in photysnthesis and uses it to drive metabollic processes

some of the carbs ,proteins and lipids produced by plants are eaten by herbivores

plants take it ammonia through roots and we get it from eating it

released through cellular respiration goes back into atmosphere as carbon dioxide

deforestation reduces the movement of carbon from the atmosphere into the biomass

afforestation increases the movement of carbon from the atmosphere

marine pollution with toxic materials can reduce phytoplankton populations which reduces absorbtion of dissolved carbon dioxide

climate changeducing area of sea ice will cause less co2 to be removed from the sea . this is because there will be less algae habitats which mean less algae

carbon in DOM is slowly released as co2 by the aeoribic respeiration in soil organsims especially bacteria and fungi . ploughing increases the oxygen supply and speeds the aeroibic decomposition up causing there to be less carbon in the store and an increase in the atmosphere

in the absence of oxygen the respiration by aneoribc soil organisms releases methane gas . this methane is released into the atmosphere it gradually oxidides into co2

renewable energy sources and nuclear poweer produce lower co2 emmisions than fossil fuels

habitats such as peat bogs , and forests contain huge stores of carbon . protecting these from exploitation is important to prevent higher co2 releases

large scale tree planting could remove alot of co2 from the atmopshere .once the tree reaches its full sixe there will be no further net storage of carbon but the tree will be resovoir . if the trees are harvested and kept as wood then replanting would provide additional carbon storage as new trees grow

captures carbon before the fuel is used so that the fuel does not release CO2 when burnt .

gasification converts fuel such as coal into gaseous hydrogen and co2 . the co2 can then be removed for strage and the hydron can be distributed for use in vehicles homes or industry , when burnt the exhaust gases contain water vapour but not co2 .

co2 can be removed from echaust gases of fossil fuel combustion using several methods . dissolving it in solvent , high pressure membrane filtration , cyrogenic seperation

plants absorb the phosphates thye will use in metabollic processes , they arent effective of absorbing phosphates so most plnats have symbiotic relationshipss with mycorrixal fungi . they have a high network in the soil which increases the surface area for phosphate absorbtion

decompostion - the break down of the phosprelated proteins in dead organic matter releases phosphates and they are often made soluble by soil microbes which allow them to be absobrbed by plant s

the phosoprpsu organisms that die and beocme incorporated into sediments may no longer be availble to other organsims such as planktonic organisms that sink to the bottom when they. diie .this reduces the productivity of surface waters of oceans because phodsphours avaialbikity is a limiting factor

proccesses that mobilise phosphorous and make it avauailble to living organisms are often slo

most phosphorous s mined as alscium phosphate then trested to produce ammonium phopshate which is more soluble

use of fertilisers mobilises compounds unto the envrionment moresolubly . this increases crop production but can also contribute to eutrohphication

biological waste should be used as fertilisers to maintain phosphate nutrient avaiablity

crop breeding programmes increase the ffiency of phosphate absorbtion by cropds