Explain the types of waste generated by human activities.

(N/A) Waste generated by human activities is generally classified into $3$ main types:
$(a)$ Biodegradable waste: These are organic materials that can be broken down by microorganisms into simpler substances. They can be disposed of in deep pits in the ground for natural decomposition.
$(b)$ Recyclable waste: These are materials like paper,glass,and certain metals that can be processed and reused. Rag-pickers and waste collectors play a crucial role in separating these materials for recycling.
$(c)$ Non-biodegradable waste: These include materials like plastics,synthetic fibers,and certain chemicals that cannot be decomposed by biological processes. They persist in the environment for a long time.
Additionally,hospitals generate hazardous waste containing disinfectants,harmful chemicals,and pathogenic microorganisms. Such waste requires careful treatment and specialized disposal methods,such as the use of incinerators.