Our analysis of production and cost begins with a period economists call the short. run. Theshort run in this microeconomic context is a planning period over which the. managers of a firm must consider one or more of their factors of production as fixed.
Sharks have two sets of paired fins on the sides of their body, in the same general position as the main wings and horizontal tail wings of a plane. The shark can position these fins at different angles, changing the path of the water moving around them.
Sharks: Body Parts. If you look at a shark, you will see it has a number of special adaptations that allow it to fit into an ocean environment. A shark has fins and a streamlined body that help it swim through water.It has gills, which take in oxygen directly out of the water.Because of its gills, sharks can stay underwater and not have to come to the surface to breathe. shark has fins and a streamlined body that help it swim through water. It has gills, which take in oxygen directly out of the water. Because of its gills, sharks can stay underwater and not have to come to the surface to breathe.