A cavity in the ground where organisms can be buried is called a hole. If sediment fills this hole the organism may become fossilized.
The cavity left behind in the rock after an organism's hard part has dissolved is called a mold. Mold fossils are negative impressions of the organism that once occupied that space.
It might be Cast bud
Bituminous coal is an organic sedimentary rock formed from the partially decayed remains of plants. Anthracite coal is considered metamorphic rock, and is derived from a bituminous coal protolith. Coal.
When sediment fills a mold and becomes rock, a cast is created. This is a copy or replica of the original organism or object that made the mold, preserved within the rock.
Soil is mostly made up of mineral particles (such as sand, silt, and clay), organic matter (decayed plant and animal material), water, and air. These components interact to provide plants with essential nutrients, support, and drainage needed for growth.
Cast.
A fossil type characterized by an open space left inside a rock by an organism that has decayed is called a mold fossil. Mold fossils are created when the organism decomposes and the impression is preserved in the sediment that surrounds it, leaving behind a cavity in the shape of the organism.
Not necessarily. It may be just a fracture.
Mold
No, a thin cavity in a rock showing where a shell has decayed is not considered a fossil. Fossils are the preserved remains or traces of ancient organisms, such as bones, shells, or imprints, that have been naturally preserved in rock or sediment over time. The empty space left behind by a decayed shell would be considered a mold or cast, not a fossil.
Coal
When the hard parts of an organism decay and leave a cavity in the rock, a fossil mold can form. This mold is a negative impression of the organism's hard parts in the surrounding rock, preserving the shape and structure of the original organism.
The cavity left behind in the rock after an organism's hard part has dissolved is called a mold. Mold fossils are negative impressions of the organism that once occupied that space.
a mold
a blank is the cavity left behind in the rock after an organism hard part has dissolved
Fossils called molds are often left by the remains of plants or animals that have decayed, leaving an impression or cavity in the surrounding rock. These molds can provide valuable information about the shape and size of the original organism. Sometimes, the mold can fill with sediment and form a cast of the organism.
Coal is an organic sedimentary rock, formed from the sedimentary processes of compaction and cementation.