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.
JF-The top of both the foot and the hand is the dorsal surface. The opposite side of the hand is the palmar surface; the opposite side of the foot is called the plantar surface. Don't know why you thought that dorsal would be down.The dorsal fin of the shark is on his back. didn't say that dorsal was down. Dorsal means back, spinal or posterior side and ventral means front, abdominal or anterior side. In that sense, the top of the foot faces front and the sole of the foot faces backwards when the foot is extended.