Remains
Remains What are fossils? Fossils are the preserved remnants of plants and animals. They are usually found in rocks. They are several years old. They may be the remains of living things like bones, shells, eggs, seeds and so on. Or, they may footprint or scratch marks left long ago. Different fossils There are different ways in which things once alive can be fossilized. What are stromatolites? The oldest fossils are 'Stromatolites'. They are formed by bacteria such as cyanobacteria. Some of these date back to over 3 billion years! How does formation of fossil take place? Most fossils form when the dead remains of animals or plants get buried in the mud. They remain buried for years and eventually turn to stone. How can a fossil's age be found? Scientists fell a fossil's age from the rock it is found in. They know how Ola rocks are relative to each other because layers of rock form on top of each other, so the lowest layers are the oldest. Measuring...