In 2003 a single case in Alberta of bovine spongiform encephalopathy, also known as mad cow disease, temporarily shut down export markets for Canadian beef. a. Using firm and industry diagrams show the short-run effect of declining demand for Canadian beef due to the shutdown of its export markets. Label the diagram carefully and write out in words all of the changes that you can identify. b. Although export markets eventually began to open up later that same year, the demand for Canadian beef remained low. On a new diagram, show the long-run effect of the declining demand. Explain in words