what should i choosw computer science or biology

plz tell mee some one..12345

@ vinay 
That completely depends on you , both comp . sci and biology are scoring subject , and i would recommend to take biology , and there are certain reasons for choosing biology over comp sci 
1- u have a large field aspect opened for you that is medical field . 
2-in chemistry there are certain topics which required biology besic knowledge , and u can do easily that . THAT ARE IN CLASS 12 . 
3- even in PCM also u can go for engg , and comp sci is not a compulsory subject for persuing engg . 
4- biology ius a intresting subject with a lot of things to be wonder around , and u will come to know many things after studying it .. 
BUT IF U HAVE GOOD MEMORY POWER THEN ONLY CHOOSE BIOLOGY , as it have various scientific name u have to remember , and thats might prove disastrous . 
in 11^th u will face certain difficulty but in 12^th bio are all easy .. 
BUT , IF U HAVE GOOD GRASP IN PCM , AND WANT TO DO ENGG ONLY , NOT TO GO FOR MEDICAL , THEN CHOOSE COMP SCI . THAT WILL HELP U IN ENGG 1ST YEAR if u choose comp . sci engg as a branch .. 
REST DEPENDS ON YOU 
HOPE IT CLEARS YOUR DOUBT 

ALL THE BEST ..