Two years ago, like a gardener pulling out a weed, a tornado pulled out my 50 foot pine tree. Its replacement, a 4 foot blue spruce, grew 8 inches last year, about the length of my hand. At this rate it will take 70 years to replace my lost pine. Apparently, trees produce 30 percent of the oxygen we breath, the plankton on the oceans surface produces the rest so its a good thing we aren’t cutting down all the trees and polluting the oceans. Of course one day soon we may all wake up with a head-ache due to lack of oxygen, and i don’t think I can hold my breath long enough to grow a tree.