click below
click below
Normal Size Small Size show me how
Vocabulary Review
Question | Answer |
---|---|
What is any difference between indivisuals of the same species? | Variation |
THe process by wich indivisuals are better adapted to their environment and are more likely to survive and reproduce is called | Natural Selection |
Evidence that related species had a common ancestor because of the way their bodies are automaticlly constructed in similar ways. | Homologous structure |
This factor in Natural Selection happens when there are more offspring than can possibly survive on the given resources. | Overproduction |
The time it takes for half of the atoms in a sample to decay it's | Half time |
A well tested concept that explains a wide range of observations is a | Scientific theory |
The theory that species evolve quickly during short bursts of time is | Punctuated equilib |
Documentation of the millions of fossils scientists have collected over time is called the | Fossil record |
Unstable elements that decay or break down into different elements are | Radioactive elements |
Similar structures that related species have inherited from common ancestors are called | Homologous structures |
A hollow space left where the fossil has decayed or dissolved is called a | Mold |
A process comparing the age of twork fossils by their placement in the layers of sedimentary rock layers is | Relative dating |
Gradual changes in species over time is called | Evolution |
Fossils that are buried in sediments and actually to rock are | Petrified fossils |
A trait that helps an organism survive and reproduce is an | Adaptation |
The theory that evolution occurs slowly but steadily is | Gradualism |
A diagram that shows how scientists think different groups of organisms are related is a | Branching tree |
A process that tests the radioactive materials within a fossil to tell it's actual age is called | Radioactive dating |
Preserved remains of an organism that lived in the past are | Fossils |
When no members of the species are still alive is called | Extinct |
A copy of the shape of the organism that made is called a | Cast |
This is a factor in natural selection as organisms attempt to survive using the same limited resources | Variations |