The map shows the frequency of flood events in US counties between 1996 and 2003. Identify the places that might benefit from building dams, levees,
and diversion canals.
PLS

true is the answer : )

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds