What's the source of magma at the bottom of the vent called?

The source of magma at the bottom of the vent is called magma chamber. This where all the vents are fed with magma and transport it to the surface. The magma chambers are like a big underground pool of liquefied rock (magma), and under the immense pressure the magma is released on the surface through the vents.

Humid continental climate is found in the interior of continents between the 30 and 60 degrees latitude, but usually above the 40 degree line.   40 degrees north of the equator means less direct sunlight and therefore less warmth.   this climate is mainly found in the northern hemisphere since there are no major landmasses in the southern hemisphere.  if you live in northern indiana, you know all about humid continental because that is the climate type you have!

Lol why dont you actually do the work instead of have people do it for you. jk i do it too lol