Which of the following public officials is most involved with the implementation of U. S. foreign policy?

A. the chief justice of the Supreme Court

B. the vice president

C. the secretary of state

D. the speaker of the House

All of the following are reasons why deserts extremely susceptible to wind erosion except a. they lack major root systems b. they contain thin, dry soil c. they have very few plants and trees d. they are extremely hot and lack water