How is darwin’s theory of evolution by natural selection related to the origin of structural and physiological adaptations? explain

Which branches of natural science include the study of an organism that lived 10 million years ago

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.

Smallest intensity of a stimulus that you can detect 50 percent of the time is