During the Paleolithic age, dogs domesticated for the first time. Dogs serve as pets and companions. All dogs descended from wolves that diverged some 15,000 to 40,000 years ago that are less aggressive toward humans.
The large variety of dogs that exist today have different breeds developed by breeders who wanted to establish specific features in dogs.
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 Greater Antilles are a group of larger islands in the Caribbean Sea. They include 4 major islands – Cuba, Jamaica, Hispaniola and, the smallest, Puerto Rico.
