Page 260 - The Ontario Curriculum, Grades 11 and 12: Science, 2008 (revised)

THE ONTARIO CURRICULUM, GRADES 11 AND 12 | science
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smog. A mixture of air pollutants, with ground- level ozone as the main component.
soot. The black impure carbon particles resulting from the incomplete combustion of a hydrocarbon.
sterilization. An act or process of destroying all forms of microbial life on and in an object.
succession. A gradual process brought about by change in the number of individuals of each species in a community and by the establishment of new species populations that may gradually replace the original inhabitants.
sustainability. The capacity to maintain a certain process or state indefinitely.
tailings. Waste consisting of ground rock and effluents that result from processing in the mining industry.
terrestrial environment. An environment based on land (e.g., forests, grasslands).
threatened species. A category of species that is under threat of extinction, or that is endan- gered, vulnerable, or becoming rare in a given environment.
titration. A method of analysing the compos- ition of a solution by adding known amounts of a standardized solution until a given reaction (colour or conductivity change, precipitate for- mation) is produced.
toxic waste. Waste containing a poisonous sub- stance that has a harmful effect on the body.
vaccination. Inoculation with viral or bacterial organisms or antigens to produce immunity in the recipient.
vaccine. A product that protects an organism from disease by producing immunity to a pathogen.
watt. A unit of power equal to 1 joule per second.