Oligopoly is a state of limited competition, in which a market is shared with a small number of producers or sellers. The most clear example of this is the second option.
In the smarphone business, the operating system market is dominated by IOS and Android and it's almost impossible for a new software provider to enter the marker and be successful at it.
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Biosphere is everything living on Earth
The lithosphere is the earth, as in ground
Hydrosphere is the water
Atmosphere is the gases that make up Earth’s barrier from space/ the sky.
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<span>This is the thing that associates us to our humankind. It is the thing that connections us to our past, and gives a look into our future. Since the beginning of the earth, recounted stories before even the composed word or oral dialect is what have made man aware of his and past as an approach to shape our reality as earthlings. Things transpire , the components of a story , yet as people we have one of a kind points of view, which shape how a story is ended.</span>
Please could you indicate what changes are there discussed by the text
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