A system.
The parts of an organism are arranged in specific structures and systems that work together to support the organism's functions. These structures can be simple or complex, depending on the complexity of the organism. The arrangement of parts is crucial for the organism to carry out its life processes efficiently.
Different parts of living organisms are formed as the genetic information is read. This controls how and when various parts are constructed as the organism develops.
Fossils are formed in rocks when the hard body parts of an organism get buried in sediment and are preserved when it turns to rock.
Reductionism is the term for understanding the whole of an organism by its parts. It involves breaking down complex systems into simpler components to better understand how they function.
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.
Simple parts of an organism are basic structures that perform specific functions, while complex parts are made up of multiple simple parts working together to carry out more specialized functions or processes. Simple parts are often found in unicellular organisms, while complex parts are more common in multicellular organisms.
Molds are formed as empty spaces left in a rock when the soft parts of the organism decay and the hard parts are dissolved by chemicals.
A mold forms when the original parts of an organism in a sedimentary rock are weathered and eroded. This mold is a hollowed-out impression of the organism's shape that is left behind after the actual remains have been removed.
The process you are referring to is called differentiation. This process involves cells becoming specialized for specific functions within an organism, which allows for different parts to perform specific tasks necessary for the organism's survival and reproduction. Differentiation is essential for the development and maintenance of complex multicellular organisms.
mold
The nonliving parts of an organism's environment are called abiotic factors.
Fragmentation occurs when an organism of many cells breaks into two or more parts and these parts survive to produce a new organism.