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Several otter species live in cold waters and have high metabolic rates to help keep them warm. Eurasian otters must eat 15% of their body weight each day, and sea otters 20 to 25%, depending on the temperature. In water as warm as 10 °C (50 °F), an otter needs to catch 100 g (3.5 oz) of fish per hour to survive.
Quizlet is a multi-national American company that provides tools for studying and learning. [1] Quizlet was founded in October 2005 by Andrew Sutherland, who at the time was a 15-year old student, [ 2 ] and released to the public in January 2007. [ 3 ]
With the exception of math and Super Quiz, the objective tests each have 50 questions worth 20 points a piece. The math test is weighted more heavily, with 35 questions worth approximately 28.6 points per question. Until 2013, the Super Quiz written test contained 40 questions, each worth 15 points.
The Carnegie rule is a rule of thumb suggesting how much outside-of-classroom study time is required to succeed in an average higher education course in the U.S. system. Typically, the Carnegie Rule is reported as two or more hours of outside work required for each hour spent in the classroom. [1]
A study that compiled seventeen years' worth of observational data demonstrated a significant difference between the occurrence of tool use in Amchitka Island, Alaska and Monterey, California. Alaskan otters used tools on 1% of dives, while Californian otters used tools on 16% of dives. [12]
Rosa was adopted by the Monterey Bay Aquarium in 1999 and served as surrogate mother for a record 15 otters. She outlived the life expectancy for wild southern sea otters.
Hermann Ebbinghaus began the scientific study of human memory with this treatise On Memory in 1885. [2] Ebbinghaus experimented on himself by testing his own ability to memorize lists of randomly arranged syllables presented at a regular pace of 2.5 syllables per second.
The Asian small-clawed otter (Aonyx cinereus), also known as the oriental small-clawed otter and the small-clawed otter, is an otter species native to South and Southeast Asia. It has short claws that do not extend beyond the pads of its webbed digits. With a total body length of 730 to 960 mm (28.6 to 37.6 in), and a maximum weight of 3.5 kg ...