Answer: barrier and network externalities monopoly power
Explanation:
This is platform were other potential competitors in same trade are discouraged from entering into the same market(by gang members) area thereby giving them monopolistic power over the area where their business operates.
Rosa, an avoid tennis player, is beginning to feel some slight aches in her elbows and knees, something she has never experienced before. in terms of typical development, she is most likely in her thirties.
<h3>How does age affect sporting activities?</h3>
The older a person gets the less likely they would be able to continue carrying out certain activities. This is put in this way, when a person is at the age of thirty, they have gotten to the age where there overall fitness would start to be on a decline. Their muscle mass and their endurance would decline also. Their joints would get rigid.
Hence we can say that Rosa, an avoid tennis player, is beginning to feel some slight aches in her elbows and knees, something she has never experienced before. in terms of typical development, she is most likely in her thirties.
Read more on fitness here: brainly.com/question/13490156
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<h2> <em> </em><em>As</em><em> </em><em> </em><em>the</em><em> </em><em>development</em><em> </em><em> </em><em>of</em><em> </em><em>human</em><em> </em><em> </em><em>history</em><em>,</em><em>people</em><em> </em><em> </em><em>learned</em><em> </em><em> </em><em>to</em><em> </em><em>worked</em><em> </em><em> </em><em>together</em><em>.</em><em> </em><em>they</em><em> </em><em> </em><em>started</em><em> </em><em> </em><em>cultivating</em><em> </em><em> </em><em>together</em><em>. </em><em>they</em><em> </em><em>found</em><em> </em><em>it</em><em> </em><em> </em><em>tiresome</em><em> </em><em>and</em><em> </em><em>threating</em><em> </em><em> </em><em>to</em><em> </em><em>roam</em><em> </em><em> </em><em>alone</em><em>,</em><em> </em><em>so</em><em> </em><em>they</em><em> </em><em> </em><em>lived</em><em> </em><em> </em><em>in</em><em> </em><em>a</em><em> </em><em>group</em><em> </em><em> </em><em>led</em><em> </em><em> </em><em>to</em><em> </em><em>development</em><em> </em><em> </em><em>of</em><em> </em><em>society</em><em>. </em><em>then</em><em> </em><em> </em><em>after</em><em>,</em><em> </em><em>society</em><em> </em><em> </em><em>originate</em><em>.</em></h2><h2><em>#</em><em> </em><em>hope</em><em> </em><em> </em><em>this</em><em> </em><em>answer</em><em> </em><em> </em><em>help</em><em> </em><em> </em><em>u</em><em>.</em><em>❤</em></h2>