Definition: Accretion means "the retention of a material or substance on another surface." For example, in rock formation, it refers to the process where rocks are accumulated onto the underlying sediment by friction or abrasion. For example, when a sandstone stone falls off the rock face during an earthquake, the rock remains solid and does not move. It is similar to what happens with accretion on rocks. Accretion can also refer to the accumulation of material in various locations over time. In meteorology, it refers to the accumulation of rainwater on the surface of a lake or ocean due to evaporation. Accretion is an important part of rock formation and erosion processes. It contributes to soil stability by trapping organic matter and providing a protective layer for plants and animals.
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