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biogenic
That would be fossils.
The rock that forms is called a fossil.
The type of rock that forms where the remains of plants and animals are deposited in thick layers are called organic sedimentary rock.
Weathering is the breakdown of a rock into smaller particles. Acids from animal waste and even the movement of rocks from an animals locomotion can contribute to weathering. Some marine organisms can create chemicals which chemically attack rock causing dissolution.
aciod
Plants roots grow in cracks in rocks. This causes a rock to break apart. Animals dig in the ground and while digging, it breaks down rock gradually.
The rock is called coal.
Fossils is the word
Organic Sedimentary Rock
Primary Succession
The process of the breakdown of rocks into smaller pieces by physical means is called mechanical weathering.