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100
Organisms with traits best suited to their environment are most likely to survive and reproduce is called what
What is natural selection
100
preserved remains of trace of old living things
What is fossil
100
organisms with little or no changes
What is preserved remains
100
this law says sediments are deposited in horizontal layers
What is law of original horizontality
100
3 basic units of the geologic time scale
What are eras, periods, and epochs
200
What adaptation allows an organism to blend in with the environment
What is camouflage
200
hollow area in sediment in the shape of an organism
What is mold
200
rock that forms when magma or lava hardens
What is igneous rock
200
break or crack in earth's crust
What is fault
200
animal with a backbone
What is vertabrate
300
Any body structure that is similar in function
What is analogous structure
300
solid copy of the shape of an organism
What is cast
300
age of rock compared to the ages of other rocks
What is relative age
300
gaps in rock
What is unconformity
300
another name for Devonian period
What is age of fish
400
study of development of an organism
What is embryology
400
fossils in which minerals replace all of part of an organism
What is petrified remains
400
number of years since a rock formed
What is absolute age
400
time it takes for 1/2 of radioactive atoms to decay
What is half life
400
these live in land and water
What is amphibian
500
What is Earth's processes that are happening today and are similar to what happened in the past
What is uniformitarianism
500
a thin coating of carbon on rock
What is carbon film
500
this law says each layer of rock is older than the one above and younger than the one below
What is law of superposition
500
carbon 14 is useful in dating materials from plants to animals up to about how many years ago
What is 50,000
500
what is a trilobite
What is 3 lobed ocean organism
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