1) The document describes experiments conducted by students to explore biodegradable materials. They compared how quickly different food packaging materials degraded and tested the strength of gelatin films at different concentrations. 2) The students also measured the degradation rates of materials like gelatin capsules, starch, and films in water, acids, and bases. They found rates varied based on factors like pH, temperature, and concentration. 3) As a design project, the students created alginate beads that could be used to deliver medicine gradually as the beads degraded. They proposed developing a biodegradable mobile phone case from sunflower seeds that would grow into flowers after degradation.