Un gato de 5kg de masa situado en la terraza de un edificio a 45 metros de altura resbala y cae

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.

If its history of, then b) because a) implies only present day (now)

True will be your answer dude

The geological theory that states that pieces of earth's lithosphere are in constant slow motion is the theory of plate tectonics.