Consider the following statements regarding biofortification as a strategy to address micronutrient deficiency in India's staple crops:

Statements

1. Biofortification aims to enhance the nutrient content of crops through the plant's own biological processes during growth, rather than adding nutrients to food after harvest.
2. Rising atmospheric carbon dioxide concentrations have been shown to increase the density of micronutrients such as iron and zinc in cereal crops, thereby partly offsetting the effects of soil degradation.
3. Agronomic biofortification — improving soil health and nutrient availability through farming practices — is considered complementary to seed-based biofortification in addressing micronutrient deficiencies.