evolution relearn Crossword

behavior or physical characteristic that allows an organism to survive and reproduce in its environment
the gradual change in species over time
a process by which individuals that are better adapted to their environment are more likely to survive and reproduce than others that are not
that variety of organisms that inhabit the earth
British nationalist who formulate the theory of evolution by natural selection
any different between individuals of the same species
the disappearance of all members of a species from earth
gaps in the fossil record
similar structure that related species have inherited from common ancestor
The preserved remains or traces of an organism that lived in the past
process where scientists look at the half-life of chemical contained in rocks around a fossil to determine the age of fossil
Any change of DNA in the organism
A group of organisms that are physically similar and can mate with each other and produce offspring that can also mate and reproduce
a well-tested concept that explains a wide range of observations
a diagram showing how scientists think different groups of organisms are related.
a fossil formed when minerals replace all or part of an organism
A type of fossil formed when a shell or other hard part of an organism dissolves, leaving an empty space in the shape of the part.
a type of fossil that forms when a mold become filled within mineral that then harden
The time it was ages for half of atoms in a radioactive element to decay
A technique used to determine which of two fossils is older
an unstable element that breaks down into a different element
the million fossil that scientist have collect
The theory that evolution occurs slowly but steadily
The theory that species evolve during short periods of rapid change.