Consider the following statements regarding the benefits of expanding tree cover in India:

1. Tree plantations serve as natural carbon sinks, mitigating climate change by absorbing carbon dioxide (CO₂).

2. Expanding tree cover improves soil health, enhances groundwater recharge, and reduces soil erosion.

3. The Green India Mission (GIM) has helped increase India’s forest cover by more than 1% between 2017 and 2021.

4. Agroforestry systems can provide additional income sources for farmers while enhancing the resilience of crops to extreme weather conditions.

Which of the statements given above are correct?