What is the basic cause of ocean tides

The world wars of the twentieth century immediately led to a. the establishment of a communist bloc in eastern europe b. the urbanization of europe’s societies c. an emphasis on humanism d. an emphasis on ties to greek and roman societies select the best answer from the choices provided. a b c d

Largest layer of atmosphere international space station orbits ultraviolet radiation causes ionization the phrases describe what layer of earth's atmosphere?

The graph shows the number of employed workers in the united states in nonfarm jobs from 2008 to 2013. the best conclusion that can be drawn from the graph is that the number of nonfarm jobs remained consistent over time. started going down in 2008. went up every year since 2008. started going down in 2010.