(of coupled parts)
121Anoxic event — As early as 1911, major oceanic currents were well mapped and understood, albeit without today s understanding of how they affect regional and global climatological conditions …
122Chemical biology — is a scientific discipline spanning the fields of chemistry and biology that involves the application of chemical techniques and tools, often compounds produced through synthetic chemistry, to the study and manipulation of biological systems.… …
123Sensory substitution — means to transform the characteristics of one sensory modality into stimuli of another sensory modality. It is hoped that sensory substitution systems can help handicapped people by restoring their ability to perceive a certain defective sensory… …
124Sicilian Baroque — is the distinctive form of Baroque architecture that took hold on the island of Sicily, off the southern coast of Italy, in the seventeenth and eighteenth centuries. The style is recognizable not only by its typical Baroque curves and flourishes …
125Hedgehog signaling pathway — In a growing embryo, cells develop differently in the head or tail end of the embryo, the left or right, and other positions. They also form segments which develop into different body parts. The hedgehog signaling pathway gives cells this… …
126High-speed rail in China — This article is about high speed rail in the People s Republic of China. For high speed rail in the Republic of China (Taiwan), see Taiwan High Speed Rail. High speed rail (HSR) trains in China A China Railways CRH1 train in Guangzhou. CRH1 is… …
127metabolism — /meuh tab euh liz euhm/, n. 1. Biol., Physiol. the sum of the physical and chemical processes in an organism by which its material substance is produced, maintained, and destroyed, and by which energy is made available. Cf. anabolism, catabolism …
128Ordovician Period — Interval of geologic time, 490–443 million years ago, the second oldest period of the Paleozoic Era. It follows the Cambrian and precedes the Silurian. During the Ordovician, many of the landmasses were aligned in the tropics. Life was dominated… …
