When heavy rain follows a dry season in the mountains, the land can change abruptly. for example, a can rush downhill as a huge mass of soil, water, and rock, leaving a bare scar in the hillside.
a.
mudslide
b.
volcano
c.
earthquake
d.
glacier

Explanation:

This abrupt change can alter the surface, like mudslides, they are formed of water, rocks and water, like is described. This mudflow is capable to destroy vegetation, and leave behind fissures.

battery with hi vtge high val resist in series