Areas of north america that are far from the oceans are prone to what?

The grassland of North America is a "steppe climate" in fact in Russia grasslands are called Steppes.  This climate makes us prone to WEATHER from high pressures and low pressures meeting up and not liking each other very much - Lightning, Hail, Tornados, Floods, and in the northern parts Blizzards.  Basically Winds and Clouds are what we watch and monitor - beautiful, dangerous, and can go from benign to ferocious in the blink of an eye.  Weather can kill and weather can be a salvation.  It depends on the whims of pressure.

A,) cause a & b are equal & both gives 180°

The answer to this question is  c. pharmaceutical accumulation  reclaimed water refers to the water that being used again after it already  used for agricultural purposes.this type of water often contains pharmaceutical accumulation because of the chemical fertilizer that is used for the plants is absorbed into the water.