- 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
- So, photosynthesis means green plants convert from carbon dioxide and water and sunlight into carbohydrates and food and oxygen for themselves

- If a process converts something into something else, then that something is a raw material in that process
- Photosynthesis is a kind of process
- Therefore, if photosynthesis converts something into something else then that something is a raw material in photosynthesis

- Photosynthesis means green plants convert from carbon dioxide and water and sunlight into carbohydrates and food and oxygen for themselves
- If photosynthesis converts something into something else then that something is a raw material in photosynthesis
- So, in the photosynthesis process sunlight has the role of raw material

- Photosynthesis is a kind of process
- If something has the role of raw material in a process then that something is required for that process
- So, if something has the role of raw material in photosynthesis then that something is required for photosynthesis

- In the photosynthesis process sunlight has the role of raw material
- If something has the role of raw material in photosynthesis then that something is required for photosynthesis
- Hence, a plant requires sunlight for photosynthesis

- A plant requires sunlight for photosynthesis
- A leaf performs photosynthesis
- So, a leaf requires sunlight to perform photosynthesis

- If something is required for a process then that something must be obtained for that process
- Absorbing something is a kind of method for obtaining something
- Hence, if something is required for a process then that something can be absorbed for that process

- A leaf requires sunlight to perform photosynthesis
- If something is required for a process then that something can be absorbed for that process
- Therefore, a leaf absorbs sunlight to perform photosynthesis

- A leaf absorbs sunlight to perform photosynthesis
- Photosynthesis makes food for the plant by converting carbon dioxide, water, and sunlight into carbohydrates
- Hence, a leaf absorbs sunlight to make food

Therefore, a leaf absorbs sunlight to make food
Q: What is taken in by the leaves of a tree so it can make its own food?
Context:
- If something is required for a process then that something must be obtained for that process 
- Sunlight is a kind of solar energy 
- Absorbing something is a kind of method for obtaining something 
- If a process converts something into something else, then that something is a raw material in that process 
- Photosynthesis is a kind of process 
- If something has the role of raw material in a process then that something is required for that process 
- Photosynthesis makes food for the plant by converting carbon dioxide, water, and sunlight into carbohydrates 
- Photosynthesis means green plants convert from carbon dioxide and water and solar energy into carbohydrates and food and oxygen for themselves 
- A leaf performs photosynthesis