Accidental Exposure. Sometimes women take medication before they realize that they are pregnant. When this happens, they may worry about the effects of the medication on their unborn baby. The first thing a woman who is pregnant or who is planning on becoming pregnant should do is talk with her healthcare provider.
Corundum is found as a primary mineral in igneous rocks such as syenite, nepheline syenite, and pegmatite. Some of the world's most important ruby and sapphire deposits are found where the gems have weathered from basalt flows and are now found in the downslope soils and sediments.
Tertiary Sources. Tertiary sources are the furthest removed from the origin of an event, idea, or period. While secondary sources are the interpretation and evaluation of primary sources, tertiary sources are essentially summaries or collections of primary and/or secondary sources. In simple terms, tertiary sources distill primary and secondary sources into a format that is accessible to a general audience.