Upon awakening one morning in St. Louis, Missouri, you notice that the sky is clear, but the temperatures in the area are well b
elow freezing and the humidity is low. What is the most likely source region of the air mass affecting St. Louis? a.The Pacific Ocean b.Maine c.Siberia d.Northern Canada
The country among the choices which has about 20 active volcanoes is the Philippines. The PHIVOLCS which is the Philippine national institution dedicated to studies on volcanoes have identified at least 23 volcanoes as active with 21 of them having historical eruptions.
