What is the main difference between a child and a teenager?

puberty

Explanation:

A child is a kid that is in a learning age. a child might say anything that does not make any sense. However, a teenager must be learned on how to behave. A teen must talk sense able things and not like a kid.

Explanation:

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halogen, any of the six nonmetallic elements that constitute group 17 (group viia) of the periodic table. the halogen elements are fluorine (f), chlorine (cl), bromine (br), iodine (i), astatine (at), and tennessine (ts).

b) the inside picture would look at a very high temperature in a very low ph