Question

why should biodegradable and non biodegradable wastes br discarded in two different dustbins?

Answer 1

because non bio degradable waste doesn't decay in soil soon so they are separated if they separated biodegradable waste will decay fast in soil and non biodegradable doesn't decay Soo
hope helps you

Answer 2

To differentiate these wastes they are seperated into two different dustbins as biodegradeable substances can be broken down into simpler substances and are eco friendly whereas non bio degradeable substances cannot be broken down into simpler substances by biological processes and are not environment friendly