Answer:
True
Explanation:
It is a sprirical and the outermost region of the solar system.
Answer:
Island
Explanation:
An island is a piece of land that is completely surrounded by water. If a piece of land is a continent, it cannot be technically considered an island. Australia in that sense is not considered an island; it is too big. Greenland is not its own continent but it is still an island so it is the worlds largest island.
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A. Can help leaders decide how to plan for the future
Answer:
nitrogen gas and oxygen gas.
Explanation:
78% of earths atmosphere is made up of nitrogen and 21% is made up of oxygen.
<u>Answer:</u>
Ptolemy accounted for 'retrograde motion' in his model of the solar system by introducing smaller circles named 'epicycles'.
<u>Explanation:</u>
- According to Ptolemy, the Sun and the other planets in the Solar system orbited around the Earth.
- The Greeks were convinced that Ptolemy's earlier model did not provide for backward or the retrograde motion.
- Ptolemy thought over it for a while and theorized the possibility of 'epicycles'.
- According to Ptolemy, the planets that orbited Earth also orbited another smaller point.
- The smaller orbits followed by the planets while in motion around the Earth in a larger orbit were introduced by Ptolemy as 'epicycles'.
- Until Kepler proposed his models of the functioning of the Solar system, Ptolemy's models were considered the most relevant.
