Examlex
Iodine-125 (¹²⁵I) in the form of titanium-encapsulated cylindrical seeds has been used quite extensively within the past decade to give a tumoricidal radiation equivalent dose for:
Grassroots Environmentalism
Beginning in the 1980s, the fourth stage of the environmental movement; distinguished by the diversity of its members and belief in citizen participation in environmental decision making.
Conservation Era
The earliest stage of the environmental movement, which focused on the preservation of “wilderness” areas.
Mainstream Environmentalism
Beginning in the 1970s, the third stage of the environmental movement; characterized by enhanced organization, improved promotional campaigns and political tactics, and an increased reliance on economic and scientific expertise.
Grassroots Environmentalism
An environmental movement that starts at the local level with individuals or small groups advocating for environmental protection and changes in environmental policy.
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