increase in the concentration of certain fat-soluble chemicals such as DDT or heavy metal compounds in successively higher trophic levels within a food web.
chemicals designed to break down the molecular structure of a material, causing it to disperse and to speed up its natural decomposition
the most abundant and dangerous class of halogenated hydrocarbons; synthetic organic chemicals hazardous to the marine environment
fast moving particles or high energy electromagnetic radiation emitted as unstable atomic nuclei disintegrate. the radiation has enough energy to dislodge one of more electrons from atoms it hits to form charged ions which can react with and damage living tissue.
the deactivation of an organisms nervous system and senses by chemical means, designed to desensitize but not to kill
energy released when atoic nublei undergo a nuclear reaction such as the spontaneous emission of radioactivity, nublear rission, or nuclear fusion. about 17% of the electrical power generated in the US is provided by the nuclear fission of uranium in civilian power reactors
the triatomic form of oxygen. this is in the upper atmosphere protects living things from some of the harmful effects of the suns ultraviolet radiatio
a diffuse layer of ozone mixed with other gases surrounding the world at a height of about 12-25 miles.
polychlorinated biphenyls (PCBs)
Chlorinated hydrocarbons once widely used to cool and insulate electrical devices and to strengthen wood or concreate. PCBs may be responsible for the changes and declining fertility of some marine mammals.
semisolidi mixture of organic matter, microorganisms, toxic metals, and synthetic organic chemicals removed from waste water at a sewage treatment plant.