Answer:
B. a private good or a club good.
Explanation:
People can be prevented from using a private good or a club good because they are excludable goods.
Excludable goods or services are goods that public can be prevented from using or enjoying. On the contrary, non excludable goods are those goods and services that it is impossible to prevent the public from using/enjoying. Examples of excludable goods are private properties such as a personal phone, fish in a fish farm, the services of a gym or golf club. examples of nonexcludable goods are fish in a public river, the services of the police, a concert on a national television network.
No, because it usually takes about 29 days to see all of the moon's phases.
The correct options are (A&D). under the Tang Dynasty Chang’an was the capital and it became one of the most important centers of culture and trade. During the eighth century CE, the city had the largest population on the earth, which was close to 3 million. The Chang,an was located it was at the end of the Silk Road. So, People from different culture and belief came to the city for trade and made the city as a center of culture and trade.
The answer is:
The old-age dependency ratio is calculated as the number of people who are age 65 years or older, divided by the number of people age 15 to 64, times 100.
The old age dependency ratio tells the number of those people who are aged above 65 year as a share of those between 15 to 64 years.
In the other words, this ratio tells us how many retired people one worker will have to sustain.That is to say this ratio tells us the number of people who are not earning anything rather they are dependent upon other people for their day to day.
