What methods do anthropologist, archaeologist, historians, and geographers use to explore prehistory?

Name the organs of humanelemintary canal.

Based on the observation that only male crickets produce a song, you hypothesize that a male's song is a form of communication to potential mates. you set up a simple experiment to test this hypothesis. in the laboratory, you place a male snowy tree cricket in enclosure a, which is adjacent to enclosureb. in enclosure b, you place other insects, one at a time, and observe their responses to the male's song. the enclosures are designed so that the two insects being tested cannot see or smell each other, but sound is transmitted from enclosure a to enclosureb.

The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million