What are the 4 time zones in the U. S???

How does sociology account for the cause of drug and alcohol addiction?

Which of the following most likely contributed to the outbreak of world war ii? a. embargoes on international trade b. higher tariff rates in european countries c. sanctions imposed by the united states d. global economic depression

Any study/memorization tips? i have exams in a week and it would be great to try suggestions!you ; )