The ________ period was a time of major extinctions, including 75 percent of amphibian families.

a. Jurassic
b. Pennsylvanian
c. Permian
d. Mississippian


c. Permian

Environmental & Atmospheric Sciences

You might also like to view...

Which of the following happened to form the features in this region?

A. continental rifting B. seafloor spreading C. formation of a continental hot spot D. volcanism that produced new land E. All of these choices are correct.

Environmental & Atmospheric Sciences

Biosphere II would have been a successful and valuable experiment if the enclosure had not been invaded by an ant species

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

Explain the difficulties accompanying landfill siting and outsourcing. How can these processes be handled responsibly?

What will be an ideal response?

Environmental & Atmospheric Sciences

Name three of the top 10 rivers by discharge and where they are located

What will be an ideal response?

Environmental & Atmospheric Sciences