Question

4. How is the plant a “no-cost” option to save the Earth:​

Answer 1

Explanation:

Planting trees is a good thing. And it’s even better when it’s free! If you choose one of these excellent ways to plant trees for free you don’t even have to plant that tree yourself.

All you have to do is pat yourself on the back for having done a good deed. Then go ahead and share this article with your family and friends, so they can plant free trees as well.

Answer 2

Answer:

Because plants give us food,oxygen,shade, medicines, firewood, wood,gum,shelter,rain and also protect us from pollution. So,they are no-cost option to save Earth.