What causes ocean surface currents?
A. differences in water temp.
B. high salinity
C. wind forces
D. difference in density

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

Vessels draining the myocardium of the heart, open primarily ,into which chamber?

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.