Barcelona is the only one in a coastal location.
On the medieval world-maps it was represented only the part of the world known as the 'old world', which is consisted of Europe, Asia and Africa. Before the big discoveries, people living in this continents had knowledge only of this part of the world, while South and North America, Australia and Antarctica where still unknown to them, thus they are missing in the world-maps of this period.
Answer:
Increasing of temperature.
Explanation:
Glaciers are substances carried by melted ice. And the presence of these indicates increasing of CO2 which leads to increase of temperature
As in 2009, there are approximately 20,000 cities or metropolitan areas in the United States.
