When goods or services are given to another without any apparent expectation of a returned gift, we call it __________.

Tools made in the Upper Paleolithic suggest that the people were much more effective hunters and fishers than their predecessors because __________ have been discovered.

Which of the following is not a theory about what happened to the Neandertals?

The first clear indication of a changeover to food production took place in the Near East about __________.

The only source of change for mitochondrial DNA is random mutation, which is thought to occur at the rate of __________.

Of the following animals, which is not believed to have been hunted by Neandertals?

Neandertal habitation sites contain little evidence that they were hunting (tools/fossils of large game).

The average size of the brain of Homo sapiens is _________ cc.

Differences in Neandertal skulls from modern human skulls include the following, except for ___________.

Cro-Magnon first appeared in Europe about _________ years ago.