the pigment accumulation is not always present
1Biological pigment — The Blue Morpho butterfly, native to Central America, derives its distinctive blue coloring from iridescence rather than from pigmentation. Biological pigments, also known simply as pigments or biochromes[1] are substances produced by living… …
2Anaxagoras and the atomists — C.C.W.Taylor ANAXAGORAS In the course of the fifth century BC the political and cultural pre eminence of Athens attracted to the city a considerable number of intellectuals of various kinds from all over the Greek world. This phenomenon, the so… …
3On the Origin of Species — Origin of Species redirects here. For other uses, see Origin of Species (disambiguation). On the Origin of Species   …
4arts, East Asian — Introduction music and visual and performing arts of China, Korea, and Japan. The literatures of these countries are covered in the articles Chinese literature, Korean literature, and Japanese literature. Some studies of East Asia… …
5Europe, history of — Introduction history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …
6animal behaviour — Introduction any activity of an intact organism. A living animal behaves constantly in order to survive, and all animals must solve the same basic problems. They must, for instance, periodically replace their energy source (consume… …
7nervous system — Anat., Zool. 1. the system of nerves and nerve centers in an animal or human, including the brain, spinal cord, nerves, and ganglia. 2. a particular part of this system. Cf. autonomic nervous system, central nervous system, peripheral nervous… …
8Hair — For other uses, see Hair (disambiguation). Hairy redirects here. For individuals nicknamed the Hairy , see List of people known as the Hairy. Hair Cross section of a hair Latin unguis …
9Shar Pei — Chinese Shar Pei Other names Chinese Shar Pei Chinese Fighting Dog Country of origin China Patronage F.C.I.[1] …
10Deciduous — For other uses, see Deciduous (disambiguation). Deciduous forest in autumn …
