Almost everyone knows that plants and trees convert carbon dioxide into oxygen. We all need oxygen to breathe and survive. Every plant carries out this conversion. Some of them do this more effectively. NASA is always busy doing something.
Full Sun Perennials: 10 Beautiful Low Maintenance Plants That Thrive In The Sun
Possible school experiment to show importance of wetlands/riparian zones! This shows the importance of plants in our soil. Plants like trees and grasses help purify ground water. Without them the ground water gets polluted and harder to clean and drink.