Answer: The atmosphere is the superhighway in the sky that moves water everywhere over the Earth. Water at the Earth's surface evaporates into water vapor which rises up into the sky to become part of a cloud that will float off with the winds, eventually releasing water back to Earth as precipitation.
Explanation:
Answer: the interval is the independant variable, the amount of salivation is the dependant variable
Explanation: see, the interval isn't whats going to change, it stays the same, the dogs salivation however can change and in the pavlov experiment it did change, so that one is the dependant variable
