Quick answer please?biology?

Whale (Cetacea) belong to Taxon1 Cetartiodactyla. So whales are nothing but couples who have adapted to a life in the water. The fact that rural couples were the ancestors of the whales living today is evidence of fossil whales such as e.g. B. of the genus ambulocetus ( literally means the “incoming whale”). The closest relatives of the whales (i.e. Nurse taxi) are River horses (Hippopotamidae) with today only two species: the big river horse (Hippopotamus amphibius) and the dwarf river horse (Choeropsis liberiensis). Together, whales and river horses form the taxon within the Cetartiodactyla Whippomorpha or Cetancodonta.

The sister group of Cetartiodactyla is the taxon perissodactyla (Un Paarhufer), including fossil tribal representatives, also called Mesaxonia. The unpaired bugs are now a group that is only poor in the art, with the five types of rhinocerotidae (Rhinocerotidae) as well as (in the opinion) four to five types of tapir (tapirus) and the six to eight types of horses (equus) belong. Cetartiodactyla and Perissodactyla together form the taxon of Pigs (Euungulata2).

The hoofs, in turn, are a subgroup of a mammal taxon, which Laurasiatheria name. In addition to bats (Chrioptera), predators (Carnivora) and shed animals (Pholidota), the Insect eater (Eulipotyphla) and finally into this group belongs the mole.

So whales are related to moles and horses (as they are related to the theory of absenteeism with all other beings). Of the two species mentioned, however, there is a closer relationship to the horse, but the closest relatives are the river horses.

Footnotes

1 A taxon is a name for a relationship group that is not assigned a specific category. The modern system has abandoned the classic category system (class, order, family, etc.) because, first, there is only one category, namely the type, a definition, and secondly only sibling taxis really stand at an equivalent, comparable level of relationship.

2 The hoofs were formerly called “Ungulata”. However, the taxon “Ungulata” is not a natural metropolitan unit (monoophylum), but polyphyletic, i.e. contains representatives of different historical origins. Among the “Ungulata” were, for example, the Paenungulata (Elefanten, Schgeber und Seekühe) and the tube teeth (Tubulidentata), which today belong to the Afrotheria.