All of the fossils ever discovered on Earth are referred to as...

When an organism dies and minerals replace the original material and hardens into a rock this is...

A type of fossil formation when a dead organism is compressed leaving only an outline or film of the organism is...

This image is of...

This image is of...

These tracks are an example of this type of fossil formation...

Fossil formation in which pressure has driven off the liquids and gases is called...

When the tissue of an organism is preserved, like in bog preservation, this is called...

Petrified wood and other fossils that form as original material is replaced is called...

This insect trapped in amber is an example of...

When scientists determine the order in which rock layers were deposited to determine a fossil’s age, this is called...

When scientists use radioactive decay to determine a more precise age of a fossil, this is called...

The chart that divides Earth's history into different time units, such as Eons, Periods, and Epochs is...

When the last individual organism of a species dies, this is...

When many species become extinct within a few million years or less, this is...

Change over time is...

The change over time in populations of related organisms is...

A person, like Darwin, who studies plants and animals by observing them is called...

True or False: To be considered a theory, the explanation of the natural world has to be well supported by evidence and accepted by the scientific community.

A slight difference in an inherited trait of an individual member of a species is...

The process by which populations of organisms with variations that help them survive in their environment live longer, compete better, and reproduce more than those that do not have the variations is...

An inherited trait that increases an organism’s chance of surviving and reproducing in its environment is called...

The shape of this toucan's beak is this type of adaptation...

This mouse lemur is nocturnal. The fact that it is active at night is this type of adaptation...

Canadian geese migrate south for the winter. This type of adaptation is...

This plant creates food for itself through the process of photosynthesis. This is an example of this type of adaptation.

It is hard to see this leaf tailed gecko. An adaptation like this that enables a species to blend in with its environment is called...

The resemblance of one species to another species, like this viceroy compared to the monarch is called...

When organisms with desirable traits are artificially mated or cross-pollinated with organisms with similar desired traits, this is referred to as...

The study of similarities and differences among structures of living species is called...

Body parts of organisms that are similar in structure and position, but different in function are called...

Body parts that perform a similar function but differ in structure are called...

Body parts that have lost their original function through evolution, like this pelvic bone in a modern whale, are called...

The study of the development of embryos from fertilization to birth is called...

The study of gene structure and function to determine how closely related species are is called...

Studying DNA to estimate at what time in the past living species split from a shared common ancestor is called...

True or False: The Fossil Record is complete.

True or False: Scientists cannot date most fossils directly , so they date the rocks the fossils are embedded inside.

True or False: Radioactive decay is best measured in sedimentary rock.

The Earth's oldest fossils are microscopic, unicellular organisms found in rocks that are...

Which answer shows the proper scientific notation for this large number: 456,000,000,000,000

Write the following in scientific notation: 6,200,000,000,000,000

There have been this many mass extinctions in the current Phanerozoic Eon.

Mass extinctions can be caused by (check all that are true):

How closely related species are depends on:

The Theory of Evolution best supported by evidence today is...

Darwin served as a naturalist on this survey ship...

Darwin traveled on a survey ship of the British Navy to...

While at the Galapagos Islands, Darwin observed these species, among others (choose all that are true)...

Variations occur naturally in populations, and are caused by...

A population of tortoises produces many offspring that inherit its characteristics. This is the first part of the Theory of Evolution by Natural Selection, or...

A tortoise is born with a beneficial trait that makes it have a better chance of survival. This is the 2nd part of the Theory of Evolution by Natural Selection, or...

Food is a limiting resource, so not all offspring survive. Tortoises with beneficial traits are more likely to survive. This is the 3rd part of the Theory of Evolution by Natural Selection, or...

Overtime, beneficial variations are inherited by more and more offspring. This is the last part of Darwin's Theory, or...

The accumulation of many variations can lead to this...

Darwin realized changes caused by selective breeding were much like changes caused by natural selection, the only difference being...

All of the following provide support for Darwin's Theory of Evolution by Natural Selection (choose all that are true):

True or False: The more closely related species are, the more similar their genes and proteins are.

True or False: Humans and rhesus monkeys have nearly identical Cytochrome C

True or False: Scientists still debate the rate at which natural selection occurs.

True or False: New evidence supporting the theory of evolution by natural selection is discovered nearly every day.

The discovery of Tiktaalik supports Darwin's Theory of Evolution by Natural Selection because...

True or False: Even though we are now studying evolution at the molecular level, the basic principles of Darwin's Theory have remained unchanged for 150 years.