Changes

''The climatic zones of the two continents are quite different. In North America, subarctic climate prevails in the north, gradually warming southward and finally becoming tropical near the southern isthmus. In South America, the climate in the north is tropical, becoming cooler southward, and finally becoming a cold, marine climate'' [http://www.britannica.com/eb/topic-20369/Americas America] Encyclopædia Britannica.

''The climatic zones of the two continents are quite different. In North America, subarctic climate prevails in the north, gradually warming southward and finally becoming tropical near the southern isthmus. In South America, the climate in the north is tropical, becoming cooler southward, and finally becoming a cold, marine climate'' [http://www.britannica.com/eb/topic-20369/Americas America] Encyclopædia Britannica.

 

America is also understood as one of the five continents of the globe, with an area of 16,000,000 square miles, and been larger than Europe and Africa together. Its length from the northern limit of Alaska to the southern limit of Chile is 8,700 miles.  

America is also understood as one of the five continents of the globe, with an area of 16,000,000 square miles, and been larger than Europe and Africa together. Its length from the northern limit of Alaska to the southern limit of Chile is 8,700 miles.