What is interdependence?

countries thrive with policies that promote isolation.

countries must depend on other nations to provide some needs.

countries are able to be self-sufficient with a little practice.

weak countries cannot provide basic needs for their citizens.

What is the mercury length of time for one revolution around the sun?

Ozone in the upper atmosphere has been depleted by a. sulfur dioxide. b. chlorofluorocarbons. c. carbon dioxide. d. oxygen.

To solve this system of equations by elimination, what operation could be used to eliminate the y-variable and find the value of x? 6x + 5y = 2 4x + 2y = 8 a) subtract 2 times the second equation from 3 times the first equation b) subtract 3 times the second equation from 2 times the first equation c) subtract 5 times the second equation from 2 times the first equation d) subtract 2 times the second equation from 5 times the first equation