What is an unconfined aquifer sometimes called?

To be eligible for naturalization, an immigrant must be able to speak, read, write, and understand: a) his name b) poetry c) the constitution d) the english language

What's erosion? a. the breakdown of rock into smaller pieces b. the removal of weathered products from rock c. a change in rock resulting from exposure to water d. a chemical change in rock that weakens it

In what three areas is the us leader?