The number of micrometers in a millimeter is

Which of the following protects a bacterial cell by acting as a buffer against harmful chemicals?

A uM is equal to

The study of single-celled animals is

The Sung period in China is known as

In 1264, the new Mongol emperor was

The Mongols established the _________ dynasty over China.

The Sung defenders were ______ for the Mongol attack on their fortresses.

Which of the following countries did not see many of its films play in arthouse movie theatres in America between 1946 and 1966?

The Hollywood Ten, sometimes also referred to as The Hollywood Blacklist, were a group of filmmakers who refused to testify to HUAC about possible Communists in Hollywood. Because of this, studios refused to hire them.