L Lydia New member Jun 18, 2009 #1 a. Increases as a direct result of diminishing returns b. Rises whenever marginal physical product decreases c. Rises in the short run because some resources are fixed d. All of the above
a. Increases as a direct result of diminishing returns b. Rises whenever marginal physical product decreases c. Rises in the short run because some resources are fixed d. All of the above
