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… and particulate matter. Carbon monoxide is a poisonous gas emitted by vehicles and released by forest fires and open … industrial operations, vehicles and area sources (e.g., gas station refilling, open burning, paints and solvents in … transboundary air pollution from damaging environment and natural resources and is based on the “critical loads” …

… Chlorine that reaches the stratosphere is also produced by natural occurrences such as volcanic eruptions or large … of chlorine fluctuate. It has been shown, however, that natural sources only create approximately 15% of chlorine in … Protocol has also avoided the emissions of greenhouse gas equivalent to more than 135 billion tonnes of carbon …

… is an extremely biodiversity-rich area, both in natural and cultural terms, and the chosen special themes for … returned to its original venue in Joen- suu, Finland, had ‘Natural Resources’ as its special theme. The eleventh Course … Protocols, has since been expanded to a global ‘Greenhouse Gas Air Pollution Interaction and Synergies’ (GAINS) model; …