Rust that forms on rocks or metal because of extended exposure to oxygen is what example of chemical weathering?

Which of the following is not part of the president’s responsibilities as party leader? a. raise money for the party b. represent the interests of the party c. support other party members up for election d. removing members of opposing parties from congress

Restricting immigrants from entering a country may be based on what belief?  

"there will be differences in degree of mood elevation seen in depressed clients after receiving either cognitive-behavioral or psychoanalytic therapy."; in this hypothesis, mood elevation is the: