International Environmental Treaties

• Montreal Protocol is an international treaty signed at Montreal (Canada) in 1987 to control the emission of ozone-depleting substances (ODS).
  
• The Vienna Convention for the Protection of the Ozone Layer is an environmental agreement signed in 1985 that provided frameworks for international reductions in the production of chlorofluorocarbons that cause ozone depletion.
  
• Rio de Janeiro Conference in 1992 was held for addressing urgent problems of environmental protection and socio-economic development at the global level.
• The Kyoto Protocol is an international agreement linked to the United Nations Framework Convention on Climate Change, which commits its Parties to reduce greenhouse gas emissions leading to global warming.
  
• So the correct answer is 'Montreal protocol'.

The Kyoto Protocol is the only legally binding agreement to reduce the greenhouse gases under the United Nations Framework For Climate Change (UNFCC). It was signed in 1997 and got effective in 2005. The participating countries have agreed to reduce the emission of greenhouse gases by an average of 5% below 1990 levels during the first commitment period of the Kyoto Protocol from 2008-2012. The Protocol targets the following greenhouse gases:

Recognising the deleterious affects of ozone depletion, an international treaty, known as the Montreal Protocol, was signed at Montreal (canada) in 1987 (effective in 1989) to control the emission of ozone depleting substances.

The primary objective of the Montreal Protocol is to protect the ozone layer by phasing out the production and consumption of ozone-depleting substances, such as chlorofluorocarbons (CFCs).

While the Vienna Convention provided the framework, the Montreal Protocol was the specific international agreement that established binding control strategies and timelines for reducing the release of ozone-depleting substances.

Kyoto Protocol to the United Nations Framework Convention on Climate Change aimed to reduce the emission of greenhouse gases that contribute to global warming and climate change. It was adopted in the year 1997.

The Nagoya Protocol is a supplementary agreement to the Convention on Biological Diversity that provides a transparent legal framework for the effective implementation of the Access and Benefit Sharing (ABS) mechanism.

ODS- Ozone Depleting Substances are the substances that cause depletion of the ozone layer. Under Montreal Protocol a global agreement was signed in the year 1987 in order to reduce the production of ODS.

The Montreal Protocol on substances that deplete the ozone layer is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion. It was agreed on 16 September 1987 and entered into force on 1 January 1989. 

The 'Montreal Protocol' on substances, that deplete the ozone layer was designed to reduce the production and consumption of ozone depleting substances in order to reduce their abundance in the atmosphere, and thereby protect the Earth's ozone layer.

The 1987 Montreal Protocol on substances that deplete the ozone layer is a landmark agreement that has successfully reduced the global production, consumption, and emissions of ozone-depleting substances (ODSs). The treaty is structured around several groups of halogenated hydrocarbons that have been shown to play a role in ozone depletion. All of these ozone depleting substances contain either chlorine or bromine.

The Montreal Protocol aims to reduce the production of ozone-depleting chemicals (like CFCs), which ultimately helps reduce the amount of harmful UV radiation reaching the Earth's surface.

The Intergovernmental Panel on Climate Change - (IPCC)