Which process can cause chemical weathering?

According to the earth science reference tables, during which geologic time period were the continents of north america, south america, and africa closest together?

Which of the following is the main purpose of using an anchored network of booms which funnel debris to a collection area?

Which of the following statements best describes the quantity theory of inflation? a. inflation occurs because production cost rise and this cost increase is passed on to consumers in the form of higher prices b. inflation occurs because there is too much money in the economy c. inflation occurs because demand of good and services exceeds existing supplies d. none of these