change over time vocab
Terms in this set (25)
A characteristics that helps an organism survive in its environment or reproduce
The struggles between organisms for the limited resources in a habitat
The gradual change in a species over time
The process by which individuals that are better adapted to their environment are more likely to survive and reproduce than other members in the same species
More species produce far more offspring than can possibly survive
A well tested concept that explains a wide range of observation
A group of similar organisms whose members can mate with one another and produce fertile offspring
A characteristic that an organism can pass on to its offspring through its genes
Any difference between individuals of the same species
A technique used to determine the actual age of a fossil
A fossil formed when an animal, plant, or other organism dies, its flesh decays and bones deteriorate due to chemical reactions; minerals gradually enter into the cavity, resulting in a cast
no longer in existence
the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.
A term used by paleontologists (see paleontology) to refer to the total number of fossils that have been discovered, as well as to the information derived from them
Geological Time Scale
a system of chronological dating that relates geological strata to time, and is used by geologists, paleontologists, and other Earth scientists to describe the timing and relationships of events that have occurred during Earth's history.
a policy of gradual reform rather than sudden change or revolution.
the time required for the activity of a substance taken into the body to lose one half its initial effectiveness.
a hollow container used to give shape to molten or hot liquid material (such as wax or metal) when it cools and hardens.
changed into a stony substance; ossified.
A theory that describes an evolutionary change happening rapidly and in brief geological events in between the long periods of stasis