What was the primary reason for establishing the organization of petroleum exporting countries (opec)?

The prevailing climatic type in the southeastern part of the usa, western europe, southern brazil and northen argentina is the mid-latitude or: a)humid temperate b)humid cold c)semiarid moderate dry d)summer savanna.

How does the parallax of a nearby object compare to that of an object farther away?

Which outcome is not caused by gravitational forcea. gas and dust come together to form a planet b. planets orbit a star c. two atoms come together to form a molecule d. stars cluster to form a galaxy