Explain what developed countries can do to respond constructively to the environmental damage being done in developing countries

When economists say the quantity demanded of a product has increased, they mean the

a. demand curve has shifted to the left. b. demand curve has shifted to the right. c. price of the product has fallen, and consequently, consumers are buying more of it. d. price of the product has risen, and consequently, consumers are buying less of it.

In the short run, ________ factors of production are fixed, while in the long run, ________ of them are.

A. some; none B. all; none C. no; at least some D. all; at least some