Which mechanism forms widening bedrock joints into grikes?

💡 Explanation

Karren develops from chemical weathering; rainwater, slightly acidic from dissolved carbon dioxide, dissolves exposed limestone bedrock through preferential mineral dissolution, chemically widening the joints rather than the other options, therefore shaping the karren landscape.

• Which outcome occurs from continuous magma supply beneath a lava dome?
• Which outcome increases on an alluvial plain when vegetation degrades?
• Which process predominantly shapes low-lying barrier islands under increasing storm frequency?
• Which impact results on global carbon cycling when El Niño Southern Oscillation (ENSO) conditions intensify?
• Which impact occurs to soil composition when prolonged, intense rainfall leads to substantial downward water movement?
• Which phenomenon contributes to coastal reef erosion when sediment increases?