What belief system was endorsed by the state that ruled the Holy Land in 550 CE

How did the movement of soldiers during world war 1 contribute to the global influenza (flu) pandemic of 1918 to 1919, which killed millions of people

Plants can have a positive and negative effect on the rate of weathering

Which are evidence of the seafloor spreading? a. molten material b. magnetic stripes c. continental material d. drilled core samples e. ocean water samples