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Coin flipping, coin tossing, or heads or tails is the practice of throwing a coin in the air and checking which side is showing when it lands, in order to randomly choose between two alternatives. It is a form of sortition which inherently has two possible outcomes. The party who calls the side that is facing up when the coin lands wins.
Aquatic locomotion. A great cormorant swimming. Aquatic locomotion or swimming is biologically propelled motion through a liquid medium. The simplest propulsive systems are composed of cilia and flagella. Swimming has evolved a number of times in a range of organisms including arthropods, fish, molluscs, amphibians, reptiles, birds, and mammals.
Tradeoffs for locomotion in air and water. Penguins swim by "flying" beneath the surface of the water. Flying fish use their pectoral fins to glide above the water's surface. Certain species of fish and birds are able to locomote in both air and water, two fluid media with very different properties. A fluid is a particular phase of matter that ...
The goldeye (Hiodon alosoides) is a freshwater fish found in Canada and the northern United States. It is one of only two extant species in the family Hiodontidae, the other species being Hiodon tergisus. [4] The species name alosoides means shad -like. [5] It is also called Winnipeg goldeye, western goldeye, yellow herring, toothed herring ...
A fish can have up to three dorsal fins. The dorsal fins serve to protect the fish against rolling, and assist it in sudden turns and stops. The bones that support the dorsal fin are called pterygiophores. There are two to three of them: " proximal " (axonosts), "middle" (baseosts), and " distal ".
nominate. S. l. plotus. The brown booby (Sula leucogaster) is a large seabird of the booby family Sulidae, of which it is perhaps the most common and widespread species. [3] It has a pantropical range, which overlaps with that of other booby species. The gregarious brown booby commutes and forages at low height over inshore waters.
The video is only 45 seconds long, but it's total cuteness overload. The zoo froze large disks of ice and put them into the bobcats' pond. Watch on as they try to figure out how to grab it with ...
Bottle flipping is the act of throwing a plastic bottle, typically partially whole of liquid, into the air so that it rotates in an attempt to land it upright on its base or cap. It became an international trend in the summer of 2016, with numerous videos of people attempting the activity being posted online. With its popularity, the repetitive ...