An athlete can exercise by making mechanical waves in ropes. What is the medium of these waves? (Is not C, the athlete)

According to this food web which of the following would be considered primary consumers

Which type of stimulus do mechanoreceptors detect? sound pain heat light

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.