<span>The first part of the question is: The male's ability to shake its tail is the mechanistic cause of this behaviour. For the second part of the question, the mate choice is the adaptive function of this behaviour.</span>
The kinetic energy of an object depends on both its mass and its speed. Kinetic energy increased as mass and speed are increased.
They are all live organisms
That instant ... typically some moment on june 21 or 22 ... marks
the beginning of the northern hemisphere Summer.
