breeding bottom
41ciconiiform — ▪ bird Introduction any member of the five or six families of storklike (stork) birds (bird): herons (heron) and bitterns (bittern) (Ardeidae), the shoebill (sole species of the Balaenicipitidae), the hammerhead (sole species of the Scopidae) …
42Overfishing — Atlantic cod stocks were severely overfished in the 1970s and 1980s, leading to their abrupt collapse in 1992 Overfishing …
43Convict cichlid — Amatitlania nigrofasciata Scientific classification Kingdom …
44Animal testing on non-human primates — Image taken inside Covance Experiments involving non human primates (NHPs) include toxicity testing for medical and non medical substances; studies of infectious disease, such as HIV and hepatitis; neurological studies; behavior and cognition;… …
45nuclear reactor — Physics. reactor (def. 4). Also called nuclear pile. [1940 45] * * * Device that can initiate and control a self sustaining series of nuclear fission reactions. Neutrons released in one fission reaction may strike other heavy nuclei, causing them …
46reproductive system, animal — Introduction any of the organ systems by which animals reproduce. The role of reproduction is to provide for the continued existence of a species; it is the process by which living organisms duplicate themselves. Animals compete with… …
47Marlin fishing — Hemingway with his family and four marlin in 1935 Marlin fishing is considered by some game fishermen to be the pinnacle of offshore game fishing, due to the size and power of marlin and the relative rareness and vulnerability of this species. In …
48community ecology — Introduction study of the organization and functioning of communities (community), which are assemblages of interacting populations of the species living within a particular area or habitat. As populations of species interact with one …
49Sexual selection — This article is about the evolutionary concept. For the selection of the sex of offspring, see sex selection. Goldie s Bird of paradise: Ornamented male above; female below. Paradesia decora by John Gerrard Keulemans (d.1912) Sexual selection, a… …
50Painted turtle — This article is about the North American turtle. For the summer camp, see The Painted Turtle. Painted turtle Temporal range: 15–0 Ma …
