These dangers include earthquakes, tsunamis, and volcanoes.

FACT Natural sources of dioxins include volcanoes and forest fires.

Other natural sources of CO include volcanoes, forest fires, and other forms of combustion.

Natural processes that can release substantial amounts of pollutants into the air include volcanoes and forest fires.

Examples include munitions-storage facilities, radioactive sites and volcanoes.

There are a variety of courses that include volcanoes and deserts.

Natural sources of mercury to the atmosphere include volcanoes, forest fires and weathering of mercury-bearing rocks.

(in Spanish; also includes volcanoes of Argentina)

The ride was to include volcanoes and exploding geysers.

Later disasters in the game's sequels included lightning strikes, volcanoes, meteors and attack by extraterrestrial craft.