A sentence using complex

Complex sentence example. It was one of many complex issues. There should be complex interaction between those trends and currents. It was a complex task of regenerating Docklands, because its diverse areas were enormous.

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.

answer; the federal reserve system;