What is sedimentary?
These surfaces represent a gap in time.
What is an unconformity?
These are the two main categories of igneous rocks.
What are intrusive and extrusive?
This type of fossil provides the least amount of information about an organism.
What is a Trace Fossil?
The reason chipmunks and mice look physically similar.
What is common ancestry?
What is igneous?
This law states that sediment layers are originally deposited horizontally.
What is the Law of Original Horizontality?
This is the process of less dense water rising and more dense water sinking.
What is convection?
This type of fossil provides the most information about an organism.
What is original material?
This is a result of natural selection.
What is adaptation?
What is Calcite?
This principle states that an igneous intrusion is always younger than the rock it cuts across.
What is the Principle of Cross-Cutting Relationships?
This type of classification emphasizes evolutionary lineage.
What is phylogeny?
In this type of fossil preservation, organic carbon is replaced with silica.
What is Replacement?
This causes random occurrences in genetic make-up.
What is mutation?
Quartz sandstone is this type of sedimentary rock.
What is clastic?
This law states that in undeformed stratigraphic sequences, the oldest layer is on the bottom.
What is the Law of Superposition?
This is a physical character derived from similar parts of organisms.
What is a Homologous Structure?
Fossils provide information on an organism's form and shape which is its...
What is Morphology?
These two things drive convection in the oceans.
What are temperature and salinity?
This sedimentary rock is made up completely of shell fragments.
What is coquina?
This rule states that the clasts contained within a rock are older than the rock itself.
What is the Rule of Inclusions?
This type of organism lives on or attaches to another organism.
What is an Epibiont?
This type of fossilization is characterized by a thin black film.
What is carbonization?
What is Geology?