give rise to fluctuations
21reproductive 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… …
22String theory — This article is about the branch of theoretical physics. For other uses, see String theory (disambiguation). String theory …
23Stagflation — is an economic situation in which inflation and economic stagnation occur simultaneously and remain unchecked for a period of time. cite book last = Blanchard first = Olivier title = Macroeconomics edition = 2nd ed. pages = p. G8 publisher =… …
24star — starless, adj. /stahr/, n., adj., v., starred, starring. n. 1. any of the heavenly bodies, except the moon, appearing as fixed luminous points in the sky at night. 2. Astron. any of the large, self luminous, heavenly bodies, as the sun, Polaris,… …
25chemical bonding — ▪ chemistry Introduction any of the interactions that account for the association of atoms into molecules, ions, crystals, and other stable species that make up the familiar substances of the everyday world. When atoms approach one another …
26commodity trade — ▪ economics Introduction the international trade in primary goods. Such goods are raw or partly refined materials whose value mainly reflects the costs of finding, gathering, or harvesting them; they are traded for processing or… …
27Cosmic microwave background radiation — CMB and Cosmic background radiation redirect here. For other uses see CMB (disambiguation) and Cosmic background (disambiguation). Physical cosmology …
28reproductive behaviour — In animals, any activity directed toward perpetuation of a species. Sexual reproduction, the most common mode, occurs when a female s egg is fertilized by a male s sperm. The resulting unique combination of genes produces genetic variety that… …
29community 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 …
30modernization — See modernize. * * * Transformation of a society from a rural and agrarian condition to a secular, urban, and industrial one. It is closely linked with industrialization. As societies modernize, the individual becomes increasingly important,… …
