It is believed that a black hole
exists at the center of the Milky
Way Galaxy. While the black
hole is gigantic, we are not in
danger of being sucked in
because

How are gene and protein sequences used to classify organisms?

Name the part of the the brain labeled "e".

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.