During a sapling plantation programme at Ashoka Garden in Ashok Vihar, Vardhan said planting saplings was a "divine work" and people should protect and conserve the flora and fauna.
He also asked people to remain alert towards protection of environment.
"Not only should everyone plant saplings, but also care for plants as a member of one's own family. Trees have a very important place in our lives. They not only help in making the environment pure, but also provide life-giving oxygen, fruits, flowers, shade and cool the environment," he said.
He also urged the people to use cycle at least once a week, as it would be beneficial to the environment, as well as our health.
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