What is the main characteristic of porosity?

The main characteristic of porosity is that it can be used as a measure to determine the degree of voids present in the rocks.

Explanation:

The more porous the rock is, the more voids it has. This relation between the porosity and the degree of voids in a rock makes porosity a good parameter of measuring the extent of voids in the rocks. Moreover, porosity also enumerates the ability of a material to absorb and hold fluid. This is particularly because the pores act like openings for the fluids coming in and falling out of the material.

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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!