Cameron touches a hot iron and immediately pulls his hand away. his quick response occurs because

c

explanation:

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

population. population is the number of people or animals in a particular place. an example of population is over eight million people living in new york city.

here is your answer hope i .