C-04-Q112mediumsingle_mcq
In mountainous areas, when rainfall enters cracks of the clayey layer and erodes the hard rock, the rock becomes unstable and eventually falls down as—
In mountainous areas, when rainfall enters cracks of the clayey layer and erodes the hard rock, the rock becomes unstable and eventually falls down as—
- aflood
- blandslide
- cavalanche
- ddelta