Our Earth Has Many Resources,but They Are Not Unlimited

question 33

Multiple Choice

Our Earth has many resources,but they are not unlimited.In the case of abundant metals,supply will most often meet demand.However,problems can occur when

• A)there is a shortage of ores that can be mined at a reasonable cost.
• B)high grade ores are depleted and low-grade ores need to be mined.
• C)transport and processing costs override economic feasibility.
• D)all of the above.

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Definitions:

Environmental Performance Index

A method of quantifying and numerically marking the environmental performance of a country's policies.

GDP Per Person

The gross domestic product divided by the population of a country, providing a per capita measure of economic output and standard of living.

Healthier Environments

Conditions or settings that promote well-being and prevent disease among the population by managing environmental risk factors.

Paul Ehrlich

A scientist known for his work in the fields of immunology and population control.