Which of the following nations are members of the organization of petroleum exporting countries (opec)? canada kuwait afghanistan iran

An atom of element a has 73 protons. what would the element's atomic number be?

How does specialization enable countries to trade with one another? a country can make and sell goods affordably and buy goods that it is inefficient at making. a country can make what it chooses and sell its goods to other countries. a country can decide to buy everything it needs from other countries. a country can efficiently make goods that were once difficult to make.

Which us president proposed a decimal based measurement system for the us