After the ban on plastic bags, students of a school decided to make the people aware of the harmful effects of plastic bags on the environment and Yamuna river. To make the awareness more impactful, they organized a rally by joining hands with other schools and distributed paper bags to vegetable vendors, shopkeepers, and departmental stores. All the students pledged not to use polythene bags in the future to save the Yamuna river. What values are shown by the students?

(i) From the given passage, we can conclude that the students showed awareness about the environment (ii) A polymer that can decompose by micro-organisms within a definite period of time, so that the polymer or its degraded product does not cause any harm to the environment, is called a bio-degradable polymer. For example, poly-β-hydroxybutyrate-CO-β-hydroxy valerate (PHBV) is a bio-degradable aliphatic polyester.

⎡⎢⎣−O−CH−CH2−C−O−CH−CH2−C−||||||CH3OCH2CH3O⎤⎥⎦n

(iii) Polythene is an addition polymer that is formed by addition of ethene molecules.
n(CH2=CH2) Ethene Polymerisation−−−−−−−−−→n[CH2−CH2](Repeating unit)⟶[CH2−CH2]n Polythene polymer