Evolution Crossword

Trace of an organism from the past
Principle that states that the changes in land forms result from slow changes over a long period of time
Differences in physical traits of an individual from the group to which it belongs
Inherited trait that is selected over time because it allows organisms to better survive in their environment
All of the individuals of a species that live in the same area
Measure of an organism's ability to survive and produce offspring relative to other members of a population
The study of the distribution of organisms around the world
Collection of alleles found in all of the individuals of a population
Observable change in the allele frequency of a population over a few generations
Process in which two or more species evolve in response to changes in each other
Evolution of two or more species from one ancestral species
Evolution of one or more closely related species into different species; resulting from adaptations to different environmental conditions
Isolation between populations due to barriers related to time, such as differences in mating periods or differences in the time of day that individuals are most active