Aword element at the end of the roots that changes or adds to its meaning is a(n)

A word element at the end of the root that changes or adds to its meaning is a suffix.

Like prefixes, suffixes are a type of affix. This means that when added to a word base, they create a derivative or inflectional form of this word, with a new meaning.

For example,

i feel as if they would both catch on before to long because they would see them to frequent

they protect against unsafe foods and medicines being sold

explanation: