There are four different types of volcanoes. A volcano is categorized both by formation and appearance. Different types of volcanoes also indicate the types of expected eruptions. The different types of volcanoes are: composite (or stratovolcanoes), shield, cinder cones and spatter cones.
A Vaginal Ring is a thin, transparent, flexible ring that you insert into the vagina yourself to provide contraception protection. Leave the Vaginal Ring in for 3 weeks while it slowly releases estrogen and progestin hormones into the body.
Find out more about the Pill. The ring: The birth control ring (NuvaRing) is a flexible, transparent ring you insert into your vagina at the beginning of your cycle. Once inside, the ring releases a continuous low dose of estrogen and progestin. You have to insert a new ring every 28 days.