| 1. | An "up" escalator beside a "down" escalator. |
| 2. | A windmill that harnesses the energy from moving air to turn a wheel. |
| 3. | A basketball team which passes the ball to a well-positioned player, who can then gain points for the team. |
| 4. | A contraption which converts sound into the physical movement of a mechanical arm, which then pushes a button. |
Energy is transferred from the light reaction step to the dark reaction step by
1. chlorophyll
2. ADP
3. ATP
4. RuBP