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biology paper 1 doubts

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Q38.
usually the consumer only able to take around 0.1 [or 10%] of the net productivity of the organism before them caused by many factors, e.g. some parts are unable to be eaten.
phytoplankton [1.3*10^3] ----> zooplankton herbivore [1.3*10^2] ----> zooplankton carnivore [1.3*10^1] ----> small fish [1.3*10^0] ---> tuna [1.3*10^-1]. Thus, answer is A.
 
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Can someone please help with this.
 

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How did it go guys?
around 4-5 questiom from pastpaers no? it was okayy.. its multiple guess, so fingers crossed. after 24 hours lets discuss the answers please.
Safe.
 
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The paper was pretty easy... with maybe one or two tricky questions.
I'm afraid the grade threshold would be high for this paper! Coz apparently alot of people found it easy...
Discussion after 24 hours!! Only then we'd know what the threshold would actually be :p
 
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