Evolution Vocabulary Crossword Puzzle

an impression of an organisms remains encased in sedimentary rock and/or an amber like material
when an entire species dies out and can no longer be found anywhere on earth
the process in which a species changes and branches off over an extended period of time
(a.k.a. gene migration) the transfer of genes from one population to another one
how equipped for their surrounding environment an organism is
all the inhabitants of a certain area and/or species
the theory that evolution occurs by the accumulation of small changes overtime
the process in which an organism and/or species changes to better fit its surroundings in order to survive
the different genetic possibilities within a population
the theory that the Earth's surface has been "scarred" by detrimental natural disasters
the process in which organisms most suited for their environment mate together to create environmentally tolerant offspring
a group of like organisms capable of creating purebred offspring
the theory that earths surface has been changed by constant and uniform events and/or activites
the influence of closely related species on one another's evolutionary outcomes
a fossil that helps determine the origin and/or species of the provided organism