Saturdays are your day for running errands. On a typical Saturday, you first drive to the grocery store to buy food. Then you drive home, unpack your groceries, and get back in your car to run the rest of your errands. If other people are with you, you often leave the car running in the parking lot so that the people can listen to the radio as you run the errand. Explain how your behavior is related to global warming, and describe two ways that you could change your behavior to conserve energy or be more energy efficient.

These are resources that cannot be renewed after used. examples include coal petrolium and gas

The investiture controversy began as a power struggle between pope gregory vii (1072–85) and henry iv, holy roman emperor (1056–1106).[2] a brief but significant struggle over investiture also occurred between henry i of england and pope paschal ii in the years 1103 to 1107, and the issue played a minor role in the struggles between church and state in france, as well.by undercutting the imperial power established by the salian emperors, the controversy led to nearly 50 years of civil war in germany, and the triumph of the great dukes and abbots. imperial power was finally re-established under the hohenstaufen dynasty. historian norman cantor: