Answer:
Rock avalanche.
Explanation:
The very rapid downslope movement of rock and debris. These rapid movements may be aided by a later of air trapped beneath the debris, and they have been known to reach speeds in excess of 200 kilometers per hour. rockslides. Blocks of bedrock break loose and slide down a slope.
-- I owe you $100 .
-- I will pay you $25 every month until the debt is paid.
-- How many months will it take to pay off the debt ?