Transboundary air pollution refers to the movement of pollutants, such as sulfur dioxide and nitrogen oxides, across national boundaries through the atmosphere.

The Convention on Long-Range Transboundary Air Pollution is an international treaty that aims to reduce and prevent transboundary air pollution in Europe.

Transboundary water pollution refers to the movement of pollutants, such as industrial waste and agricultural runoff, from one country to another through water bodies.

The Nile River Basin Initiative is an international treaty that aims to protect and manage the shared water resources of the Nile River Basin.

Transboundary movement of pollutants refers to the movement of pollutants, such as hazardous waste and invasive species, from one country to another through the movement of people, animals, or goods.

The Basel Convention is an international treaty that aims to regulate the transboundary movement of hazardous waste.

Land degradation refers to the degradation of land and water resources due to human activities, such as deforestation, overgrazing, and unsustainable agricultural practices.

The United Nations Convention to Combat Desertification is an international treaty that aims to combat desertification and land degradation in arid, semi-arid, and dry sub-humid areas.

Biodiversity loss refers to the loss of biodiversity due to human activities, such as habitat destruction, pollution, and climate change.

The Convention on Biological Diversity is an international treaty that aims to conserve and sustainably use biological diversity.

Global warming refers to the increase in the average global temperature due to human activities, such as the burning of fossil fuels.

The Paris Agreement is an international treaty that aims to reduce greenhouse gas emissions and mitigate climate change.

Sea level rise refers to the rise in sea levels due to the melting of glaciers and thermal expansion of ocean water.

The United Nations Convention on the Law of the Sea is an international treaty that aims to protect the marine environment from pollution and other harmful effects.

Ozone depletion refers to the depletion of the ozone layer in the stratosphere, which is caused by the release of ozone-depleting substances, such as chlorofluorocarbons (CFCs).