The law of conservation of matter is that matter cannot be destroyed, it can only be changed. Really, any cycle is an illustration because, in cycles matter is not destroyed, only changed.
In simple words: The hydrologic cycle illustrates the law of conversation of matter through the matter in this cycle not being destroyed, only changed.
Glucose
C6 H12 O6
Because carbon had the same amount of atoms has oxygen
By life function of SYNTHESIS.............
I believ the answer is c but if not i am super super sorry!!!
Therefore, it takes 40 sec to perform the work.