Fossils and Geologic Time Review

how life and environment have stayed stable over time

how climate and weather have stayed stable over time

how the environment has changed and life stayed stable

how the environment and life has changed over time

Carbon Film

Mold

Cast

Petrified

shells and footprints

rocks and sand

hieroglyphics

rare minerals

similarities in DNA

similarities in early development

similarities in the number of mates

similarities in body structure

the distance from the Earth to the sun

the fossil record

the time it takes to orbit the Earth

the thickness of the mantle

age

sleeping habits

diet

body coverings

calcium

muscle

bone

cartilage

sediments

index fossils

minerals

carbons

Cenozoic

Silurian

Mesozoic

Paleozoic

to provide information about how life and environmental conditions may have changed

to provide information about current life forms and current environmental conditions

to provide information about how previous life forms would exist in current environmental conditions

to provide information about how current life forms would exist in previous environmental conditions