Definition
noun, plural: chemicals
(1) A substance made up of chemical elements or produced from a chemical process
(2) A drug, especially illicit or addictive drug
adjective
Of, relating to, or pertaining to, chemistry or a chemical substance
Supplement
Word origin: New Latin chimicus
See also:
Related term(s):
This tutorial noted some of the physical and chemical factors that provide the framework of a running water community in which organisms in their favored ecological niches occupy. Learn how each of these factors affects lotic communities in this tutorial...
Homeostasis is essential to maintain conditions within the tolerable limits. Otherwise, the body will fail to function properly. The body does this through feedback control mechanisms, e.g. blood sugar level regulation and temperature regulation. Read this tutorial to know more about the principles of negative feedback control employed by the body to sustain homeostasis...
Control of Growth & Development tutorials look at how the genetic makeup determines the biological processes on a day to day basis. Various hormones are also described. Animals and plants produce hormones to incite and regulate their growth. However, growth is not only genetic and hormonal in nature. It may also depend on external factors,..
The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas others have many cells that are organized into tissues, organs, and systems. The scientific study of the cell is called cell biology. This field deals with the cell structure and function in detail. It covers..
Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons and the zooplanktons. Learn the differences between the two in this tutorial...
There are many environmental factors that arise due to the usage of water in one way or another and for every action that man does, there is a resultant effect on the ecosystem. In this tutorial, some scenarios where human action results in a response from the ecosystem, either physically or chemically, are described. ..
