Because of Dhaka's position below sea level the city experiences yearly flooding, particularly around the monsoon seasons and has the constant threat of rising sea levels, which would of course cause more flooding.
Holland is the answer to your question
8500 paid
10 years passed
15,000 returned
6500 earned
6500/8500 x 100%
76.47% (Answer)
Hope it helps
They contain fluorine atoms, carbon atoms and chlorine atoms.