The health of future generations depends on the variety of plants. It's one reason biodiversity is so important.
Variety is literally the spice of life.
From microorganisms to whales, the earth needs a wide variety of species to be healthy. It's called biodiversity. More than 21,000 plants may be useful in medicine. For instance, the active ingredient in aspirin was first discovered in white willow and later isolated in meadowsweet. Our health depends on biodiversity.