Putting your napkin to the side of your plate signals O you are done
o you have a question for the waitstaff

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

the titanic would be the correct answer

the contamination

we are putting to many trash.

i think the answer is c hope this