- Sunlight is a kind of solar energy
- Photosynthesis means green plants convert from carbon dioxide and water and solar energy into carbohydrates and food and oxygen for themselves
- Hence, photosynthesis means plants convert carbon dioxide and water and sunlight into carbohydrates and food and oxygen

- Photosynthesis means plants convert carbon dioxide and water and sunlight into carbohydrates and food and oxygen
- Photosynthesis is a kind of process
- Therefore, photosynthesis is a kind of process in which plants convert carbon dioxide and water and sunlight into carbohydrates and food and oxygen

- If an organism performs a process that converts something into something else, then that organism requires that something for that process
- A plant is a kind of organism
- Therefore, if a plant performs a process that converts something into something else, then that plant requires that something for that process

- Photosynthesis is a kind of process in which plants convert carbon dioxide and water and sunlight into carbohydrates and food and oxygen
- If a plant performs a process that converts something into something else, then that plant requires that something for that process
- Hence, a plant requires sunlight for photosynthesis

- A plant requires sunlight for photosynthesis
- Sunlight is a kind of light
- Hence, photosynthesis requires light

- Photosynthesis requires light
- Dark means a low amount of light
- Hence, darkness has a negative impact on photosynthesis

Therefore, darkness has a negative impact on photosynthesis
[Question]Janet learns that Earth is tilted. Due to its tilt, some areas on the surface of Earth experience darkness for an entire day. Which plant process is affected most during this darkness?
[Context]- Sunlight is a kind of solar energy 
- If an organism performs a process that converts something into something else, then that organism requires that something for that process 
- Dark means a low amount of light 
- Photosynthesis means green plants convert from carbon dioxide and water and solar energy into carbohydrates and food and oxygen for themselves 
- Sunlight is a kind of light 
- Photosynthesis is a kind of process 
- A plant is a kind of organism