-Russian history empire- See how many different empires you can name, in history.
Try to think of two things they had in common.

Volcanic irruption is most likely to be violent when a) volcanoes near to the sea b) the neck of the volcano is sealed by a plug c) the lava is viscous d) the lava reaches the surface through a fissure e) the volcano is on the ocean floor

How do the various countries in east asia meet their power needs? give specific examples

Which of the following is evidence to the past existence of glaciers?