Pollution Problems (Biology Experiments)
The intention of all this effort is to view the outreaching effect of a small amount of pollution on a stream and its wildlife.Things Required:1 gallon (4 litre) glass jarMeasuring cup (250 ml)Red food colouring Directions:Pour one-half cup of water into the gallon (4 litre) jar. Add and stir in two drops of food colouring. […]
