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Physics, Chemistry and Biology: Post your doubts here!

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I have them in printed form but im not doing them as no mark scheme is available so ill not get to know abt my mistakes
I do have the papers and I have even solved them. Now, I need the marking schemes to check my answers.
 
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i found in may june 2012 question no 39 varient 2 paper 1
The answer is option A i.e., adding artificial fertilisers.
Adding artificial fertilisers causes eutrophication. Digging plant material does not have anything to do with pollution.
 
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The answer is option A i.e., adding artificial fertilisers.
Adding artificial fertilisers causes eutrophication. Digging plant material does not have anything to do with pollution.
did u check the marking scheme. they say adding plant material
 
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th
but the syllabus says you should know that xylems funtion is to conduct.......i think there is a diff conduction term in biology
the same thing in xylem | it means that xylem is capable to conduct water and conduct in this sentence means that xylem allows water to pass through it :) !!
 
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