the trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock

(pg.81, 100)

a fossilized structure, such as a footprint or a coprolite, that formed in sedimentary rock by animal activity on or within the soft sediment

(pg. 83)

a principle that geologic processes that occurred in the past can be explained by current geologic processes

(pg. 80)

the weather conditions in an area ove a LONG period of TIME

(pg. 88)

a long cylinder of ice obtained from drilling through ice caps or ice sheets; used to study past climates

(pg. 89)

the supercontinent formed 300 million years ago and that began to break up 200 million years ago

(pg. 203)