Environmental Protection Agency (EPA) MVAC Certification

Which of the following statements about the Montreal Protocol is true?

1. It has been signed by all countries.

2. It focuses on preventing air pollution.

3. It addresses the phase-out of ozone-depleting substances.

4. It regulates fuel emissions from vehicles.

The correct answer is: It addresses the phase-out of ozone-depleting substances.

The statement regarding the Montreal Protocol that is true is that it addresses the phase-out of ozone-depleting substances. This international treaty, which was adopted in 1987, aims to protect the stratospheric ozone layer by phasing out the production and consumption of numerous substances that are known to cause ozone depletion, particularly chlorofluorocarbons (CFCs), halons, and other related chemicals. The protocol has been successful in reducing the levels of these harmful substances in the atmosphere, contributing significantly to the recovery of the ozone layer. It is widely recognized as one of the most effective environmental agreements in history. While there is a global commitment to the treaty, it is important to note that not every single country may have signed or ratified it due to various political and economic reasons, which impacts the accuracy of statements suggesting universal signing by all countries. The focus of the Montreal Protocol is specifically on ozone depletion rather than general air pollution or vehicle emissions, making it essential for both environmental protection and public health, demonstrating the importance of international collaboration in addressing global environmental issues.