In an economy with 4,000 unemployed people and 8,000 employed people, the unemployment rate is

Global warming is an externality

Indicate whether the statement is true or false

Sam, a U.S. citizen, buys bonds issued by a Greek company that bottles olives. Sam's purchase is

a. foreign direct investment. By itself it increases U.S. net capital outflow. b. foreign direct investment. By itself it decreases U.S. net capital outflow. c. foreign portfolio investment. By itself it increases U.S. net capital outflow. d. foreign portfolio investment. By itself it decreases U.S. net capital outflow.