Visuals: https://growbilliontrees.com/cdn/shop/files/grow-billion-trees-plantation-1.jpg
Descriptions: Learn about the NGOs in Delhi involved in tree plantation and combating pollution.
Links: https://growbilliontrees.com/pages/tree-plantation-ngos-in-delhi
Hashtags: #Delhi #TreePlantation #NGOs #PollutionControl
Keywords: Tree plantation NGOs in Delhi, pollution control, green initiatives