Fossils
are the remains of organisms preserved in the earth
Trace fossil
Fossils that show ecidence of activity (footprints or droppings
Cast fossil
Was a mold fossil then over time sediments filled thee mold and produces a full version of the mold
Mold fossil
Fossils that shows an impression of the organism
True form fossil
Fossils that show the Arianism in its original state and has been petrified over time
Fossils can be preserved in
Rock or sediment, ice, amber, tar
Relative dating
One fossil is compared to another fossil the age tells you whether it was formed before or after the other one
Absolute dating
Tells when the fossil was formed scientists measure radioactivity or carbon (test the amount of carbon or radioactivity is left in the fossil
Creationists
They believe that the earth is between 6000-6500 years old
Evolutionist
They believe the earth is millions even billions years old
Unicellular organisms
are organisms made up of a single cell
Multicellular
are living things made up of many cells
Extinction
a species family or other larger groups having no living members left alive on earth
Permian extinction
they believe that the earth's land masses separated it changed the climate on land
Cretaceous estinction
a meteorite collided with the earth killing all the Dinos
Evolution
refers to the process through which species change over time the change results in the genetic material of an organism and is passed from one generation to the next
Biological evolution
is the change of one kind of organism into another organism over many generations
Who was the first to propose a model of how life evolves
Jean baptistery Lamarck
Charles Darwin
scientist that studied fossils rock formation he took a 5 year voyage and studied variations of animals and plants
He proposed a Theory called
The theory of natural selection
The theory ofnatural selection
members of a species that are best suited to their environment survive and reproduce at a higher rate than other members of the species
Isolation
He proposed that isolation or other geological barriers