15. Si la potencia consumida por una resistencia es de 80 W y tiene un voltaje entre sus terminales de 20 V, la corriente que circula por ella es de:

Sorry i don’t know what to do

The answer is water molecules are split.cellular respiration and photosynthesis are complement  reactions to each other. these are reverse reactions. in cellular respiration glucose and oxygen yield water and carbon dioxide. so, when respiration begins,  glucose molecules are split. in the opposite reaction - in photosynthesis, carbon dioxide and water yield glucose and oxygen. thus,  when respiration begins, water molecules are split.

Ithink the answer would be a 

Answerinternal combustion engine fuel;