Which of the following are characteristics of an economic union?

common trade regulation ,free movement of capital and labor and free movement of goods.

Explanation:

An economic union is a trade that is composed of a common market with a customs union. The countries participating have both common policies on product regulation, freedom of movement of goods, services and the factors of production that is the capital and labor and common external trade policy.

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; i believe its (transgender);