Pitch
The description of a sound wave that is closely related to frequency is called pitch. Pitch refers to how high or low a sound is perceived to be and is directly related to the frequency of the sound wave, with higher frequency sounds having a higher pitch and lower frequency sounds having a lower pitch.
its called a phylum
a Class
A group of closely related classes in a kingdom is called a phylum. It is a taxonomic rank below kingdom and above class.
family
a population i think.
Neanderthal was an ancient human, closely related to modern humans.
Icthyosaurs and plesiosaurs are referred to as marine reptiles. They were not closely related.
Nucleus
species
Edwin Rommel was called the "Desert Fox."
the number of waves that passes a given point in one second is called frequency pitch is related to loudness or amplitude of sound