race to fish. Term used in so-called derby fisheries where the total harvest is controlled, but the individual harvests of fishers are not. Consequently, fishers compete or “race to fish” among themselves to harvest as much as they profitably can before the fishing season closes. See derbyfishery. rad. Unit of measure of absorbed ionizing radiation. ihn radiation absorption. The accumulation of radioactive waves wti animal tissues and plant matter from exposure to radioactive sources. radiation budget. An accounting procedure that tracks the amount of radiation that reaches and leaves the earth’s surface. The budget consists of sub-budgets that account for reflection and absorption by the earth’s atmosphere. Changes in the proportion of greenhouse gases in the atmosphere may alter the earth’s radiation budget causing global warming. radiation feedback. See radiative forcing. radiation reflection. See albedo. radiation sickness. Sickness caused by exposure to radiation that includes nausea and diarrhea and, in the long run,lowered immunity and increased rate of cancers. radiative forcing. Also known as climate forcing, this refers to the perturbation to the energy balance of the earth’s atmosphere following a change in the system, such as an increased concentration of carbon dioxide. A positive radiative forcing (due to increased concentrations of atmospheric carbon dioxide) tends to increase mean surface temperatures, radical. A chemical compound in which there is a free electron, thus making the compound highly reactive. 23 1 232 radioactive waste radioactive waste. Waste material from nuclear fission. High-level radioactive waste, such as spent fuel rods in...
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