Explanation:
increase in longevity raises the average age of the population by increasing the numbers of surviving older people. ... More specifically, it is the large decline in the overall fertility rate over the last half century that is primarily responsible for the population ageing in the world's most developed countries.
Developing countries fall relatively behind developed countries in terms of infrastructure, access of the population to sanitation, healthcare, safe drinking, water, and energy, security, and pollution-free environment and tend to show a higher degree of poverty, corruption, and political instability.
Answer:
the number of houses ≈ 8.25 million houses
Explanation:
Given that:
A typical house in the United States uses about 10,900 kWh,
1 TWh (terawatt-hour) =1×10^6 GWh (gigawatt-hour) =1×10^9kWh (kilowatt-hour)
The three Gorges Dam in China produces about 90TWh of electricity each year. If it was to to be built in the United states, the number of houses such a plant would be able to provide the electricity for in a year is given as:
Number of houses = Amount of electricity produced in a year / amount of electricity used by each house.
Number of houses = 90 TWh / 10,900 kWh = 90 × 10⁹ kWh / 10,900 kWh = 8256881
Therefore the number of houses ≈ 8.25 million houses
