what is the second mentioned circle above?
The Antarctic Circle
Antarctic Circle
The Antarctic Circle is the most southerly of the five major circles of latitude that mark maps of the Earth. 
who played marty in back to the future Michael J. Fox what is the story line of the movie? It focuses on Marty McFly, a teenager accidentally sent back in time to 1955 in a time-traveling DeLorean automobile built by his eccentric scientist friend Doctor Emmett "Doc" Brown. what is the genre of the movie? It is a science fiction film. where is the above mentioned actor from? Edmonton, Alberta. to which country does this place fall in? Canada what is the weather like in this country? Much of Northern Canada is covered by ice and permafrost. what can you tell me about the health system of this country? Here healthcare is delivered through the provincial and territorial systems of publicly funded health care, informally called Medicare. what can you tell me about its original inhabitants? They include the First Nations, Inuit, and Métis, the last being a mixed-blood people who originated in the mid-17th century. can you explain a bit of the first kind of inhabitants? They are the predominant indigenous peoples in Canada south of the Arctic Circle. what is this circle you mentioned above? It is one of the two polar circles and the most northerly of the five major circles of latitude as shown on maps of Earth. what can you tell me about the day and night of this place? At least once each year at any location within the Arctic Circle the centre of the sun is visible at local midnight, and at least once the centre is not visible at local noon.
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Antarctic Circle [SEP] Introduction
The Antarctic Circle is the most southerly of the five major circles of latitude that mark maps of the Earth. The region south of this circle is known as the Antarctic, and the zone immediately to the north is called the Southern Temperate Zone. South of the Antarctic Circle, the sun is above the horizon for 24 continuous hours at least once per year (and therefore visible at midnight) and the centre of the sun (ignoring refraction) is below the horizon for 24 continuous hours at least once per year (and therefore not visible at noon); this is also true within the equivalent polar circle in the Northern Hemisphere, the Arctic Circle.