A maratona é uma especie de corrida de longa distancia , seu percurso tem em media 42 quilômetros asssinale a alternativa que representea corretamente o local onde sao realizadas as provas A) pista de atletismo
B ) estreia nas academias
C ) campo de futebol
D ) meios públicos ( ruas e avenidas )

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.

Answer(b) both involve the use of levers;