A
change over time in populations of related organisms
biological evolution
fossil copy of an organism in a rock
cast
when all individuals of a species have died
extinction
set of all the fossils ever discovered on Earth
fossil record
chart that divides Earth's history into different time units
geologic time scale
atoms of the same element that have different numbers of neutrons
isotopes
impression of an organism in a rock
mold
similar cells that work together and perform a function
tissue
preserved evidence of the activity of an organism
trace fossil
characteristic of a species that enables the species to survive its environment
adaptation that enables species to blend in with their environments
camouflage
to overcome by argument
convince
resemblance of one species to another species
mimicry
process by which populations of organisms with variations that help them survive in their environments live longer, compete better, and reproduce more than those that do not have the variations
natural selection
person who studies plants and animals by observing them
naturalist
the breeding of organisms for desired characteristics
selective breeding
slight difference in the appearance of individual members of a species
variation
body part found in multiple species that performs a similar function but differs in structure
analogous structure
study of similarities and differences among structures of living species
comparative anatomy
science of the development of embryos from fertilization to birth
embryology
body part found in multiple species that is similar in structure and position but different in function
homologous structure
body part that has lost its original function through evolution
vestigial structure
change over time in populations of related organisms
biological evolution
fossil copy of an organism in a rock
cast
slight difference in the appearance of individual members of a species
variation