When did the worldwide response to ozone depletion begin? select one: a. 1940s and 1950s b. 1960s and 1970s c. 1970s and 1980s d. 1980s and 1990s

How many countries have portuguese as a national language?

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

What was the role of european colonies during the industrial revolution