Based solely on the inner planets, what relationship is evidenced between crust thickness and proximately to the sun? a. the greater the distance from the sun, the thicker the crust. b. none of the above. c. the closer to the sun, the thinner the crust. d. the closer to the sun, the thicker the crust.

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.