Environmental Protection Agency (EPA) MVAC Certification

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When was the Montreal Protocol implemented to phase out ozone-depleting substances?

  1. 1980

  2. 1987

  3. 1992

  4. 2000

The correct answer is: 1987

The Montreal Protocol was implemented in 1987 as a significant international treaty aimed at phasing out substances that deplete the ozone layer, particularly chlorofluorocarbons (CFCs) and other ozone-depleting chemicals. This treaty arose from growing scientific evidence highlighting the environmental and health risks associated with the depletion of the ozone layer, which protects the Earth from harmful ultraviolet radiation. The implementation in 1987 marked a pivotal moment in global environmental policy because it united countries around a common goal of environmental protection, leading to substantial commitments and actions to reduce the production and consumption of ozone-depleting substances. The protocol has undergone several amendments and adjustments since its inception to address emerging scientific data and improve the effectiveness of the phase-out efforts. The success of the Montreal Protocol is often cited as an example of effective international cooperation in addressing a global environmental crisis.

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