Since 1960, the gap between rich and poor, as measured by GNP per capita, has
a.
decreased, then increased since 1980.
b.
increased, then substantially decreased since 1980.
c.
increased, then substantially increased since 1980.
d.
decreased, then substantially decreased since 1980.
e.
has remained constant since 1980.
Solar energy is a(n) __________ resource.
a.
renewable
b.
potentially renewable
c.
nonrenewable
d.
exhaustible
e.
perpetual
To answer the first question, about the gap between rich and poor as measured by GNP per capita since 1960, you would need to look at historical data on GNP per capita for different countries. This information can usually be found in databases or reports from organizations such as the World Bank or the International Monetary Fund. By examining the trend over time, you can determine if the gap has been decreasing or increasing since 1960 and whether there has been any significant change since 1980.
For the second question, about solar energy as a resource, you need to understand the definition of different types of resources. Renewable resources are those that can be replenished naturally or through human intervention, such as solar, wind, or biomass energy. Nonrenewable resources are finite and cannot be replaced, such as fossil fuels. Potentially renewable resources are those that could be renewable if managed properly. Exhaustible resources are those that can be depleted over time.
Given the definition, solar energy is classified as a renewable resource because it relies on the sun's energy, which is constantly replenished. It is not exhaustible because the sun will continue to radiate energy for billions of years. Therefore, the answer to the second question is "a. renewable."