Geography and Ecosystem

A volcano that is currently erupting or has erupted in recent history, common in the Pacific Ring of Fire, which the Philippines is part of (e.g., Mayon Volcano, Taal Volcano).

A group of many islands in a large body of water.

A mountain range, particularly one that is long and relatively narrow.

A landscape formed from the dissolution of soluble rocks, especially limestone, characterized by caves, sinkholes, and underground drainage.

A piece of land almost surrounded by water but connected to the mainland.

A narrow passage of water connecting two larger bodies of water.

A large body of saltwater, smaller than an ocean.

A broad inlet of the sea where the land curves inward.

A shallow body of water separated from a larger body of water by a narrow landform, such as a barrier reef or sandbar.

A landform formed at the mouth of a river where it flows into an ocean, sea, or other large body of water.