1)impotent of water absortion in the alimentry canal ?
2)magnesium difficency in plant ?
3)eutrophication process?
4)disadvantage of breast feeding?
Posted Sun 22nd May, 2011 @ 19:06 by
al000y
magnesium deficiency in plants causes yellow leaves as the magnesium is needed in the chlorophyll which makes the leaves green.
Answered Sun 22nd May, 2011 @ 19:13 by
Sam
Eutrophication
Fertilisers leach into rivers
nitrates cause algae growth
water plants die due to limited sun light
Algea die when nitrates run out
decomposers (bacteria) eat the dead plants and algae
use up the oxygen
water animals die
Answered Sun 22nd May, 2011 @ 19:58 by
Pui Pui
4)disadvantage of breast feeding:
- less convenient outside home
- some women cannot breastfeed
I just remb these 2...
Answered Tue 24th May, 2011 @ 08:16 by
saraht