does 30% of food production equal 30% of calories? High calorie foods like corn and wheat need more nitrogen fertilizer than others.

Mass starvation event became a lot more likely since Iran closed the straits.

70% of the nitrogen in your body comes from fertilizer fixed from the air through these chemical processes requiring fossil fuels. If it runs out 70% of humanity will starve.

India and South asia in general needs urea fertilizer for its farms. Otherwise there will be famine.