made up of all the fossils ever discovered

IMPRESSION of an organism

COPY of an organism, formed when sediment fills in a mold

remains of conditions or activity (mudcracks/footprints)

Chart that divides Earth's history into different time units

Extinction

Changes OVER time.

A person who studies plants and animals by observing them

A slight difference in an inherited trait of individual members of a species

process in which organisms with variations are better adapted to their environments will survive and reproduce

an inherited trait that increases an organism's chance of surviving and reproducing

An adaptation that allows an organism to blend with it's environoment

an adaptation in which one species resembles another

Breeding of organisms for specific traits (like a pure-bred dog)

study of similar/difference in structures among living species

body parts that are SIMILAR in structure and position but DIFFERENT in function (Arm bones in different organisms)

Body parts that perform a SIMILAR function but differ in structures (Bird vs Fly wing)

Body parts that have lost their original function through evolution (Wisdom teeth/appendix)

studying the development of embryos

Correct order of GTS (from old to now)

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