A natural monopoly occurs when the most efficient number of firms in the industry is one. A natural monopoly will typically have very high fixed costs meaning that it impractical to have more than one firm producing the good.
Examples are Gas network, Electricity grid
Railway infrastructure.
A natural monopoly poses a difficult challenge for competition policy, because the structure of costs and demand seems to make competition unlikely or costly.
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~Melis
Answer: B. Population.
Explanation: Population may be explained from a statistical view to consist or incorporate all individuals or participants who is eligible and fits a certain research criteria within the research setting. For instance, a population of college students in New York city should consists of all students attending colleges in the New York. Hence it can be deduced that, population is a set of all eligible participants. It is from these population that sample is being drawn from which is a random subset of participants which is representative of the entire population.
I think the answer to this is A
A child is in which room full of what ?
Answer:
The Tuskegee Airmen were the first black military aviators in the U.S. Army Air Corps a precursor of the U.S. Air Force. Trained at the Tuskegee Army Air Field in Alabama, they flew more than 15,000 individual sorties in Europe and North Africa during World War II.
