Urgency, insurgency.
amoeba pronounced u-mee-bu also tech-tonic is pretty sci-ency too lol :-p
I don't believe there is one that is commonly used, but ency. I think.
http://www.nlm.nih.gov/medlineplus/ency/images/ency/fullsize/1097.jpg
A word that starts with AN and ends with OR: ancestor.
Canadian dollars ($CAN)
Yes: Emergency, frequency
The word that ends with "ion" is "suppression."
An adjective is a describing word that ends in e
A word that starts with A and ends with U: apercu.
A word that starts with E and ends with A: extravaganza.
Gross indecency
plant that ends with is