Dripping water deposits calcium salts that form stalagmites and stalactites in ______.

Dripping water deposits calcium salts that form stalagmites and stalactites in ______.

• A. Caves
• B. Canyons
• C. Valleys
• D. Mountains

Answer: (A)

Mineral deposition from dripping water in enclosed spaces drives these formations. Water rich in calcium carbonate percolates through rock, and as it drips into air in a cave, it loses CO2 and calcite precipitates. This builds stalactites from the ceiling downward and stalagmites from the floor upward, sometimes meeting to form a column. Because this process relies on a sheltered cavity where dripping mineral-rich water can continuously deposit, the best fit is that they form in caves. In other landscapes like canyons, valleys, or mountains, there isn’t the same enclosed, dripping environment to create these features.

Mineral deposition from dripping water in enclosed spaces drives these formations. Water rich in calcium carbonate percolates through rock, and as it drips into air in a cave, it loses CO2 and calcite precipitates. This builds stalactites from the ceiling downward and stalagmites from the floor upward, sometimes meeting to form a column. Because this process relies on a sheltered cavity where dripping mineral-rich water can continuously deposit, the best fit is that they form in caves. In other landscapes like canyons, valleys, or mountains, there isn’t the same enclosed, dripping environment to create these features.