Mumbai, June 5 (IANS) On World Environment Day on Wednesday, Bollywood celebrities, including Akshay Kumar, Dia Mirza, Anushka Sharma and Varun Dhawan, urged the people on social media to take care of the environment by avoiding plastic and planting more trees.

Actress Dia Mirza, also a UN Goodwill Ambassador for environment, explained people about the importance of plantation. "Trees are natural air purifiers and sequesters of carbon! As we celebrate World Environment Day with action -- planting indigenous trees -- we hope more people will come together to beat air pollution," she wrote.   As the theme of the day is 'Beat air pollution', actor Akshay Kumar has featured in "Hawa aane do" song, which is dedicated to the #BeatAirPollution campaign. He also took to Twitter and asked the people to do their bit to "improve the quality of air".  "Air pollution is a silent killer, claiming millions of lives every year. On World Environment Day, lets all come together and pledge to do our bit to improve the quality of air," he wrote.