Question
Fill in the blanks:$ A, B,$ and $C.$

Answer

$A-$Food molecules: Photosynthesis produces food molecules i.e. glucose.
$B\frac{3}{4}$ Photosynthesis: $CO_2$ is used in photosynthesis.
$C\frac{3}{4}$ Respiration: Respiration releases $CO_2$ so $C$ is respiration.

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