Carbon film fossils are formed through a process known as carbonization; this process preserves a living thing, typically a leaf, feather, crustacean or fish, as a thin layer of carbon. These fossils are typically made through compression and are generally flat, with a thin layer of carbon showing the fossil's outline (hence the name carbon film).Continue Reading
While compression, or strong downward pressure, is typically responsible for carbon film fossils, this does not tell the whole story of how these lasting impressions are made. In addition to the compression aspect of the formation process, the future fossil's organic material slowly decomposes and changes over time, with processes like polymerization of lipids (fats) and volatilization of basic elements such as hydrogen and nitrogen taking place. Eventually, the bulk of the organic material that was originally part of the leaf, feather or animal dissolves, leaving only a thin, black layer of carbon behind.
Carbonization doesn't have to refer to fossils that were preserved under this exact process. Some paleontologists may refer to any dark, flat fossil as a carbonization, though it may not exactly be a proper example of carbon film. True carbon film fossils earn that name by being composed primarily of carbon, a highly abundant mineral that causes the dark color of these fossils.Learn more about Biology
A coral reef's food chain starts with algae that produce food from water, carbon dioxide and sunlight, which are eaten by microscopic organisms, invertebrates, fish and turtles, which are eaten in turn by predators. All ecosystems, including coral reef ecosystems, have producers, consumers and decomposers.Full Answer >
Respiration is one of the requirements for living things because it is the process where organisms exchange oxygen and carbon dioxide. This is related yet different from cellular respiration, which is the process where individual cells convert oxygen into carbon dioxide while converting food to energy.Full Answer >
Photosynthesis is the process that removes carbon dioxide from the Earth's atmosphere. Carbon dioxide is also removed from the atmosphere when it mixes with water and forms carbonic acid, which is the acid that's partially responsible for the weatherization of rocks along and in the sea.Full Answer >
The complete oxidation of glucose is the process which turns glucose into water, carbon dioxide and energy. Glucose oxidation occurs in the cells and is part of cellular respiration.Full Answer >