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.
Sand Tiger Shark Visitors react strongly to this shark! Large in size and with a mouthful of protruding spike-like teeth, this shark, like the great white shark, is the image that most people picture when they think of sharks. The sand tiger sharkâs snout is narrow and flattened, the two dorsal fins and the anal fin are similar in size, and the upper lobe of the tail is much longer than the lower lobe and has a deep notch near the end. The adultâs body is light brown to gray above and paler below.