Stas-Otto method A method of extraction of alkaloids from plants and animal bodies: the substance is digested in alcohol and tartaric acid, the fatty and resinous matters are precipitated with water, the fluid is made alkaline, and the alkaloids are extracted with ether or chloroform...
If the balance of nature is left untouched, landscapes can change dramatically over time. A previous ecosystem is supers..
Hormones are essential in the regulation of the activity of the various biological systems of the human body. The ineffi..
According to Charles Darwin's theory of natural selection, preferable genes are favored by nature in the gene pool, and ..
Adaptation, in biology and ecology, refers to the process or trait through which organisms or the populations in a habit..
Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons an..
A still body of water may be disturbed by a variety of factors. One of them is wind. In fact, it is considered as the pr..
