There is an urgent need for investing in "climate smart food system" for maintaining sustainable food security system. Consider the following statements related to the crops and their impact:

1. Paddy contributes immensely to greenhouse gases from water-drenched rice fields.

2. Millets contributes to the climate change by producing atmospheric CO2.

3. Wheat is a heat-sensitive crop thus impacts the climate and soil of the region.

Which of the above statements is/are correct?