The low-pressure system is an area where the air pressure is low and is formed under the areas of the wind divergence that occurs in the upper levels of the atmosphere.
<u>Compared to the winter the high-pressure systems tend to form where the air is cool and sinks and are generally found in the polar areas and equator is the region that forms the convective currents zones and thus leads to the rising of the warm and the formation of a low-pressure system.</u>
The ridge of till is called "terminal moraine". Letter c). The terminal moraine is a type of moraine that mark the maximum advance point of the edge of a glacier.
