While the reserves of petroleum hydrocarbons within the United States are limited, other geologic resources (iron, aluminum, copper, and tin) are available in great abundance.

Question

Quizplus · Accepted Answer

The United States has limited reserves of some geologic resources like tin and aluminum, which are often imported, while it has more abundant reserves of others like iron and copper.

While the Reserves of Petroleum Hydrocarbons Within the United States