Exam 11: Evidence of Evolution

Finding an abundance of iridium in the K-Pg boundary sequence worldwide pointed to evidence that this layer was of ____ origin.

Biogeography is the study of the ____.

Which event occurred first?

Of the following, which is the oldest event?

Hind leg bones in whales are an example of ____ structures.

The discovery of immense ridges and trenches stretching thousands of kilometers across the seafloor in the 1950's led to acceptance of the theory of ____.

Based on the structural similarity of vertebrate limbs, we can conclude that these structures are examples of ____.

Typically, where would the oldest fossils be found?

An asteroid impact on Earth is often associated with the formation of ____.

Studies of mitochondrial DNA among maternally related individuals allow recent____ to be identified.

Individuals with adaptive traits tend to survive longer and produce more offspring, leading to ___ of the species.

What is an asteroid?

The study of the body structures of the ostrich, emu and rhea shown here is an example of  ____.

An unusual, worldwide formation of sedimentary rock called the K-Pg boundary sequence contains rare elements that are associated with a(n)____.

The radioactive decay of an isotope can be best compared to a ____.