Over-the-counter estrogen products are available in pill form. Estrogen levels in women who are still menstruating drop after menopause. People might shop around when choosing an over-the-counter medication by comparing possible side effects.
Updated November 25, 2016. Classification is a data mining technique that assigns categories to a collection of data in order to aide in more accurate predictions and analysis. Also called sometimes called a Decision Tree, classification is one of several methods intended to make the analysis of very large data sets effective.
For other uses, see Scientific classification (disambiguation). Taxonomy (from Ancient Greek: ÏÎ¬Î¾Î¹Ï taxis, arrangement, and -Î½Î¿Î¼Î¯Î± -nomia, method) is the science of defining groups of biological organisms on the basis of shared characteristics and giving names to those groups.