The kangaroo and koala are examples of ____________. 

Two traits found only in mammals are hair and lungs.  

Based on DNA, _______________ are the closest relatives to mollusks.  

The phylum that is characterized by segmentation of the body and jointed appendages is ____________________. 

All leeches suck blood to obtain their nutrition.  

Which of the following is the best definition of an enumerated power?

During the national debate over ratification of the new Constitution, the Federalists

The Supreme Court asserted in McCulloch v. Maryland that Congress has implied powers.  What phrase or clause did they use from the Constitution to justify this idea?

As a result of the Senate, Americans living in urban areas are

While the framers designed a system based on checks and balances, they intended which branch to be the most powerful?