Asked by Skye

Hi I'm confused on what is an stem extender and morphemes.

Underline any stem extenders in the word below.
Philosophy
Banana
Pheumectomy
Anthropology


How many morphemes do the following contain?
Sown 1
Airsickness 2?
Ohio 1
Algebra not sure.
expel 1?
Congenital 2?
Cognate 2?
herb 1
helicopter 3?
radii 1

Please help? thanks!