7.4.1 - Where does this stuff (maple syrup) come from?

7.4.2 - Do plants get their food molecules from taking them in?

7.4.3 - What other inputs could be sources of food molecules for the plant?

7.4.4 - Are any parts that make up food molecules coming into the plant from above the surface?

7.4.5 - How are these gases getting into and out of leaves?

7.4.6 - How are all these things interacting together in this part of the plant?

7.4.7 - Why do plants need light?

7.4.8 - Where are plants getting food from?

7.4.9 - Where do the food molecules in the maple trees come from?

7.4.11 - Why don't plants die when they can't make food?

7.4.12 - Where does our food come from?

7.4.13 - What happens to food that doesn't get eaten?

7.4.14 - Where does food go next?