Explanation:
To swim, they move their tails up and down, rather than back and forth as fishes do. This is because whales evolved from walking land mammals whose backbones did not naturally bend side to side, but up and down. ... Whales do the same thing as they swim, showing their ancient terrestrial heritage.
Cetaceans are fully aquatic marine mammals belonging to the order Artiodactyla, and branched off from other artiodactyls around 50 mya (million years ago). Cetaceans are thought to have evolved during the Eocene or earlier, sharing a closest common ancestor with hippopotamuses.
Sex linked inheritance is a trait that is passed through generations in which is linked directly to an individuals gender or sex. most of the time sex linked inheritance is seen in males however it can be viewed in females.
A. Any soil on the suspect should be collected and labeled
zinc and copper is a solution of brass
