How it all fits together
One idea runs through the chapter: what we eat becomes what we are — every nutrient has a job, missing one causes disease, and how far our food travels matters too.
Click any branch to open or close it. Dotted boxes are the end of a branch.
How the ideas connect
Links worth saying aloud — this is what turns facts into understanding.
1 · Jobs explain the diseases
Each vitamin or mineral has a job; when it is missing, that job fails — Vitamin A for eyes → night blindness, iron for blood → anaemia.
2 · Tests prove what's inside
The iodine, paper and copper-sulphate tests let you check, not guess, which nutrients a food has — the scientific method from Chapter 1 in action.
3 · Balanced diet ties it all together
No single food (not even millets) has everything — a balanced diet combines energy-giving, body-building and protective foods with roughage and water.
4 · Health and planet
Local, plant-based food is healthier and has fewer food miles — good for our bodies and our environment.
Self-test — rebuild the map from memory
Close the tree above, then tick each one you can say out loud without looking.