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.
8.Carcharinformes (Ground sharks : these sharks have a long snout and a nictitating membrane that protects their eyes. They include well-known species like the Blue Shark, Tiger Shark, Bull Shark, Oceanic Whitetip Shark, Blacktail Reef Shark, Houndshark and Hammerhead Shark, amongst others)