Feb 6, 2026 · A genus, for example, might be “Bird” and the species “Feeding in water,” or the genus might be “Animal” and the species “Bird.” The two together made up the definition, which could be …

Organisms are classified in a phylum or division based largely on general body plan. For example, members of the Phylum Arthropoda have external skeletons, segmented bodies, and jointed legs. …

Feb 5, 2026 · This classification is modified from that of Malcolm C. McKenna and Susan K. Bell (1997) to classify higher categories of mammals with significant contributions from Don E. Wilson and …

Feb 5, 2026 · mammal, (class Mammalia), any member of the group of vertebrate animals in which the young are nourished with milk from special mammary glands of the mother. In addition to these …

Jan 23, 2026 · Although a number of classification schemes have been devised for carbohydrates, the division into four major groups— monosaccharides, disaccharides, oligosaccharides, and …

Jan 11, 2026 · In the United States, narcotics are regulated under the Controlled Substances Act, which established a classification system with five schedules to identify drugs based on their potential for …

Feb 16, 2026 · Vertebrate, any animal of the subphylum Vertebrata. They have backbones and are also characterized by a muscular system consisting primarily of bilaterally paired masses and a central …

Jan 25, 2026 · Acetaminophen or its metabolite AM404, for example, appears to activate the endocannabinoid system, which is involved in the modulation of pain signaling, among other …

3 days ago · Sharks, skates, and rays are examples of cartilaginous fishes. The bony fishes are by far the largest class. Examples range from the tiny seahorse to the 450-kg (1,000-pound) blue marlin, …

Jan 13, 2026 · social class, a group of people within a society who possess the same socioeconomic status. Besides being important in social theory, the concept of class as a collection of individuals …