hey poeple my account had logged me out for some reason it was cblackburn24 but other then that how is everyone doing

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.

Why is this statement not a hypothesis? sunflowers require soil and plenty of sunlight and water to grow and thrive. a. it is a well-known fact. b. it is a proven theory. c. it is not falsifiable. d. it is difficult to test.

What greek scientist created a screw to move water for irrigation?