Idk if i'm too late but the answer should be A.
C. water, because H2O is certain, and all those other things vary with location and climate
Explanation:
1mm = 1/10 cm
5.43 x 10^-6 mm = 5.43 × 10^-7 cm
Noun!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Molecules in food contain chemical energy that cells use to produce ATP = adenosine triphosphate.
