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Lead shot has been banned for hunting waterfowl in several countries, [57] including the US in 1991 and Canada in 1997. [314] Other threats to wildlife include lead paint, sediment from lead mines and smelters, and lead weights from fishing lines. [314] Lead in some fishing gear has been banned in several countries. [57]
Opinion polling for Canadian federal elections 2011 Opinion polls 2015 Opinion polls • By constituency 2019 Opinion polls • By constituency 2021 Opinion polls • By constituency 2025 Opinion polls • By constituency This table provides a list of scientific, nationwide public opinion polls conducted from the 2021 Canadian federal election leading up to the 2025 Canadian federal election ...
In Canada, regulations were first enacted under the Hazardous Products Act in 1976 that limited lead content of paints and other liquid coatings on furniture, household products, children's products, and exterior and interior surfaces of any building frequented by children to 0.5% by weight. [19]
Tetraethyllead (commonly styled tetraethyl lead), abbreviated TEL, is an organolead compound with the formula Pb(C 2 H 5) 4.It was widely used as a fuel additive for much of the 20th century, first being mixed with gasoline beginning in the 1920s.
Lead is widely understood to be toxic to multiple organs of the human body, particularly the human brain. Concerns about even low levels of exposure began in the 1970s; in the decades since, scientists have concluded that no safe threshold for lead exposure exists. [2] [3] The major source of lead exposure during the 20th century was leaded ...
Led by Alexa McDonough, the NDP win 21 seats, 12 more than in 1993, including making an historic breakthrough in Atlantic Canada; McDonough wins her Halifax riding. Led by Jean Charest, the Progressive Conservatives win nearly as many votes as Reform, but only one-third the seats. The composition of the House is nicknamed "pizza pie Parliament."
Tarnished lead (left) and shiny lead (right) Compounds of lead exist with lead in two main oxidation states: +2 and +4. The former is more common. Inorganic lead(IV) compounds are typically strong oxidants or exist only in highly acidic solutions. [1] Red α-PbO and yellow β-PbO The mixed valence oxide Pb 3 O 4 Black PbO 2 which is a strong ...
Canadian nationalism became an important issue during the 1988 Canadian federal election that focused on the then-proposed Canada–United States Free Trade Agreement, with Canadian nationalists opposing the agreement – saying that the agreement would lead to inevitable complete assimilation and domination of Canada by the United States. [1]