Sheila, lydia and leila are sisters. one of them is allergic to dairy products. at the school bazaar, lydia ordered a chocolate milk, leila ordered a coffee milk shake, and sheila ordered a ginger ale. which sister has the allergy to dairy products?

(a) what was the opportunity cost of non-gm food for many buyers before 2008? (b) why did they prefer the alternative? (c) what was the opportunity cost in 2008? (d) why did it change?

Summarize the specific methods used by interest groups in order to influence governmental decisions making in all three branches of government. provide at least two examples from each branch.

Plastic and steel are substitutes in the production of body panels for certain automobiles. if the price of plastic increases, with other things remaining the same, we would expect: a) the demand curve for plastic to shift to the left. b) the price of steel to fall. c) the demand curve for steel to shift to the left d) nothing to happen to steel because it is only a substitute for plastic. e) the demand curve for steel to shift to the right