Friday, November 2, 2012 3:00:50 AM
@Kaagan: Part one of your post: True, trees get food from their roots too, and can drown if there's too much water, but I think that was covered in the video... And I don`t think any of the water is "wasted" eh? It served it`s purpose: Moving nutrients up and down the tree!
Part two: Close! It was farming practices, (including over-farming) combined with abnormal weather patterns, that caused the dustbowl. It took a law passed in Washington to force western farmers to STOP DOING THOSE DUMB THINGS! One of the rare occasions where The Gov`t actually DID know better!
Thursday, November 1, 2012 4:02:00 PM
thatâ€™s not all that correct. trees and plants draw nutrients from the soil. just like we need zinc, iron, calcium, etc to build tissues, muscle, bone. Trees need minerals for growth as well. so if what they say is true, that the tree only uses 5-6% of the water and the rest is wasted. well the more water the tree/plant takes in, the more minerals in the soil it will collect (trees can drown however if the ratio of water the minerals is too high). This is also why if you farm, harvest, and farm again without fertilizing the ground, you will over farm the soil. Over farming means, the soil is drained of required minerals for plant growth. A great example of over farming is the dust bowl of 1934. A once excellent, flat, beautiful plane became a hellhole from over farming. The dried up soil does not stick together and weighed less than traditional soil. Because of this, the soil was easily picked up by winds and created dust storms often.