Sammy is taking notes to study for a test. He wrote out the steps that involve hydrogen during photosynthesis. The steps are shown, but they are not in the correct order. 1 - Water is broken down into oxygen and hydrogen. 2 - Glucose is broken down to be used by plants. 3 - Hydrogen combines with carbon dioxide to form glucose. 4 - Hydrogen enters the plant as part of water. Which lists the correct order of the steps? 4, 2, 1, 3 4, 1, 3, 2 4, 3, 1, 2 4, 2, 3, 1