An engineer is building an electronic device. she wants to use a material that will give her the most control over the amount of electric charge that flows through a circuit. which material should she use?
a tube
a insulator
a semiconductor
a conductor

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.