If Ivanna make 40 minutes of long distance call for the month, which plan costs more

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

Which theory suggested that the earth was once a signle supercontient that gradually that broke up into the contients that we know today

Alow-pressure belt means the air is cold and dry warm and rising cold and sinking warm and moist