One of the most widely used mechanisms for coordinating interactions and facilitating cooperation between states is (are) . Group of answer choices

What is the primary goal of human communities?

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.

In which state was more than 100 billion tons of coal mined in 2005?