click below
click below
Normal Size Small Size show me how
Fossils Life Science
Question | Answer |
---|---|
Law of Superposition | A principle that states that within rock layers, the youngest layer is at the top, and the oldest layer is at the bottom. |
Fossil | The remains of an organism preserved as a mold or cast. |
Prehistoric | The period of time before recorded history. |
Geological Time | An interval of time occupied by the geological history of Earth. |
Geological Column | A diagram that shows a rock formation arranged by age. |
Stratigraphy | The study of the order and position of rock layers. |
Relative Age | The age of a rock layer or fossil within compared to the age of other layers. |
Exact Age | The age of a rock layer or fossil within a rock layer measured in years |
Common Ancestry | The state of two species sharing a common ancestor that both modern species are descendant of. |
Anatomical Structure | A particular complex body part of a living thing. |
Genetic code | A series of DNA or RNA molecules that carry the genetic information within living things. |
Extinct | A state of a species having no living member or no longer existing. |
Extant | A state of species still existing. |
Taxa | Groups of species, families, or classes of animals that share common features or traits. |
Embryonic Development | The development and formation of an embryo, an unborn or unhatched offspring that will further develop an grow. |