Explanation:

The Aravalli Green Wall Project is a major initiative to green the 5 km buffer area around the Aravalli Hill Range in four states at a function organised to celebrate the International Day of Forests at Tikli Village in Haryana.

• The Aravalli Green Wall Project is part of the Union Environment Ministry's vision to create green corridors across the country to combat land degradation and desertification. 

• The project covers states of Haryana, Rajasthan, Gujarat and Delhi - where the Aravalli hills landscape span over 6 million hectares of land. 

• The project will involve planting native species of trees and shrubs on scrubland, wasteland and degraded forest land, along with rejuvenating and restoring surface water bodies such as ponds, lakes and streams. The project will also focus on agroforestry and pasture development to enhance the livelihoods of local communities.

Hence both statements are correct.