Thursday, May 01, 2008
yeah, tmr, one more exam, one more fregging exam before slcking and its the well hated bio(except perharp last term one, due to the sick ppl) three lectures two practical, bout stuff like energy transfer, nutrient and other crap.
like last time lets try recaping
lecture 1
energy transfer, conduction= solid-solid heat transfer
convection = heat transfer through liquids or gases, usualy due to ring hot air
radiation= heat tranfer through waves, do not require medium
this means that energy is reduced as it proceed through the food web
photosysnthesis- 6CO2+6H2O->>C6H12O6+6O2
respiration- juz the reverse
production-energy acumilated by producers-measured by amountof C02 used, O2 given out and biomass produced
herbivours- faces problem with nutrient due to low nitrogen levels in plants, physical defences, chemical defences, and cellouse
carnivours-problems-herbivour defences, evolution, limited to the weak
detritvores-even lower nitogen level than living plants, chemical defences might still be present
biosphere-a part of the earth where organisms inhabit
ecosystem-a community of animals and the abiotic factors
community-two or more inacting animals
species-simliar interbredding animals
poplulation-amount of a type of animal in a certain area
tats chapter 1, two more to go....