My text:
We would like to create three biodegradable plastics with milk and vinegar, with starch and mazena. Then, in four garbage, we would like to create different environments with dry land, wet earth, sand and salt water. After buried a part of every plastic in that trash bin, we also have a piece of plastic sold in the stores.
We also bury a piece of plastic in 100% natural medium. Every month we determine the plastics, we weigh them and we take the image to see the evolution of the degradation of plastic.