is the most heavily used multiplexing technique and is familiar to anyone who has ever used a radio or television set.

hygrometers and hair thermometers (often found as part of hygrometers/psychrometers) can be used to measure humidity. barometers are used to measure atmospheric pressure, while anemometers are used to measure wind speed. so the 2nd and 4th choices should be the correct answers.

portugal is the westernmost country in europe.

answer; aristotle;