Speciation can be defined as the distribution of an element among defined chemical species in a system, and speciation analysis as the analytical activities of identifying and/or measuring the quantities of one or more individual chemical species in a sample. 1.3 Structural aspects of speciation: The definitions of species and speciation of elements are based on several different levels of atomic and molecular structure where species differences are manifest.
Noun. 1. rickshaw-a small two-wheeled cart for one passenger; pulled by one person. jinrikisha, ricksha. cart-a heavy open wagon usually having two wheels and drawn by an animal.oun. 1. rickshaw-a small two-wheeled cart for one passenger; pulled by one person. jinrikisha, ricksha. cart-a heavy open wagon usually having two wheels and drawn by an animal.
A buggy is a cart with wheels that's pulled by a horse. In the 19th century, the most popular way to take short trips was in a horse and buggy. Most people think of a horse pulling a carriage when they hear the word buggy, although you can use the term for other small vehicles, whether they're electric or powered by gasoline â like a golf buggy. If you use buggy to describe a camp site, however, you mean it's infested with insects. The origins of both meanings are uncertain, although the Middle English bugge, something frightening might be one root of the full of bugs definition.