Small domestic natural experiment. Fill water to the bottles and see what will be the color when flows through land? It is clear that living plants filter impurities. If we want to keep clean rivers and lakes, not cutting down trees!
Blobs in a Bottle (The World's Easiest Lava Lamp) by sciencebob: Here is all you need: A clean 1 liter clear soda bottle 3/4 cup of water Vegetable Oil Fizzing tablets (such as Alka Seltzer) Food coloring #Kids #Science #Blobs_in_a_Bottle #sciencebob - Click image to find more hot Pinterest pins