What factors determine the characteristics of an air mass? A.
the direction it moves
B.
the speed at which it moves
C.
the temperature and humidity of the air
D.
the weather conditions it brings

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.

About how many years does it take for one cycle of surface water to become deep water and then surface water again in the oceans? 101001,000

What do all of the above organisms have in common