adaptive change
121Graduate Record Examination — or GRE is a commercially run standardized test that is an admissions requirement for many graduate schools principally in the United States, but also in other English speaking countries. Created and administered by Educational Testing Service (or …
122photoreception — photoreceptive, adj. /foh toh ri sep sheuhn/, n. the physiological perception of light. [1905 10; PHOTO + RECEPTION] * * * Biological responses to stimulation by light, most often referring to the mechanism of vision. In one celled organisms such …
123Gregory Bateson — Rudolph Arnheim (L) and Bateson (R) speaking at the American Federation of Arts 48th Annual Convention, 1957 Apr 6 / Eliot Elisofon, photographer. American Federation of Arts records, Archives of American Art, Smithsonian Institution …
124Positive feedback — Alarm or panic can spread by positive feedback among a herd of animals to cause a stampede. Positive feedback is energy taken from the output of a system and reapplied to the input, which is phase congruent with the input signal. A system… …
125Paleolithic diet — This article is about a modern nutritional approach. For information on the dietary practices of Paleolithic humans, see Paleolithic#Diet and nutrition. Paleolithic style dish: seafood stew The modern dietary regimen known as the Paleolithic diet …
126Hearing aid — Behind the ear aid In the ear aid …
127Evolvability — is a concept within the Darwinian understanding of biological evolution. Darwin s theory of evolution by natural selection requires that plants, animals, and other organisms be able to produce offspring that are sometimes better adapted to the… …
128Evidence of common descent — The wide range of evidence of common descent of living things strongly indicates the occurrence of evolution and provides a wealth of information on the natural processes by which the variety of life on Earth developed, supporting the modern… …
