eDNA from the skin cells of a fish can be found in water
<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>
D. The heat is there via convection from the sun
Answer:
Frogs have skulls but don't have necks
