An electromagnetic wave emmited by a lithium lamp has a period of 1.54×10to the power-15s Calculate the frequency of this wave

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.

B? i think so but hope that's right and answers your question

C. hope this . : )

Answera volcano just before it erupts