need help in cie practicals(bio,chem,phy)

[yinyang]

can anyone please give me some tips in these areas

Bio-i cant seem to finish Q2 within 2hrs because i find Q1 to pretty long especially when i get the wrong results so any tips on how to manipulate data or how to complete Q1 within the first hour.

Chem-well i really don't have any problems but any tips are welcomed

phy-the only problem i have is with Q2 when i need to find 4 limitations and 4 ways to overcome them

please reply ASAP 

[Sue T]

i have a tiny tip 4 limitations & improvements in physix:
parallax error - its always there
n try thinkin of some 'digital' way of improving the experiment
ex. if ur xperiment is bout a fallin ball write down somethin bout th use of a digital camera or sensors & data logging (for accurate determining of wen it touches th ground) - just dont exaggerate
n u can also write bout plotting results on a graph n takin more readings
thts al i have - th rest is just luck

[yinyang]

please reply i need help especially in bio