The theory of evolution proposed that a series of catastrophes or mass extinctions followed by repopulation could explain why species change over time
<span>The mammalian sperm cell consists of a head, a midpiece and a tail. The head contains the nucleus with densely coiled chromatin fibres, surrounded anteriorly by an acrosome, which contains enzymes used for penetrating the female egg.</span>
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I don't understand the question
D Hew i think because isnt hew the stuff on the grass
In cold climates, the amount of snow on the ground may decrease even if the temperature stays below zero degrees Celsius. The process that best explains <span>this event is B. sublimation. </span>