CAUSE AND EFFECT. This simple experiment shows the importance of vegetation (and trees) on the environment. The water that runs through soil with vegetation -- on the left, comes out clear, while that that without vegetation is muddy. Of co
urse naman: COMMON SENSE. Yet, why do we keep cutting the trees in our forests and complaining why the water in our rivers are so muddy and dirty? Photo by Cordilleran Environmentalist Roland Yawan.
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