This document discusses polymers and biopolymers. It defines polymers as large molecules composed of repeated subunits and explains that polymerization combines monomers into covalently bonded chains. It outlines various applications of polymers in automotive, medical, and aerospace fields. Both positives like strength and weight and negatives like improper disposal are noted. Solutions proposed include reuse, recycling like Levi's jeans containing recycled PET bottles, plastic roads in India containing waste plastic, and converting plastics to fuels. Biopolymers derived from renewable resources are highlighted as alternatives that are biodegradable, carbon neutral, and help reduce fossil fuel dependence.