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A level biology q

why is it d
c.pngsorrry the answer is c
Original post by user1034723
c.pngsorrry the answer is c


how did the get c when i minus like 3.6-2.4 i got 0.8 as an answer but its not an option
Original post by user1034723
how did the get c when i minus like 3.6-2.4 i got 0.8 as an answer but its not an option


The answer is C.

CO2: 100 X (8.2-8.4)/8.4 = -2.4 %
O2: 100 X (3.7 - 2.4)/2.4 = 54.2 %

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