Killer whales are one of the top predators in the sea. They tend to eat almost anything that they come across, their diet depending on exactly what is living in their home waters. They are known to eat fish, squid, seals, sea lions, penguins, and even other whales, such as sperm whales.ou can thank the Greeks and the Romans for the name Orca, and the early Spanish sailors for the term Killer Whale. Ancient Romans originally applied the name Orca to these animals, possibly borrowing it from the Greek opue. One other thing, they are not really whales, but a type of dolphin.
A person with genotype AB has type AB blood, and a person with genotype OO has type O blood. A person with type A blood cannot receive type B blood. The reason is immunological. A person with type A blood does not have type B antigens; thus, his immune system considers the type B antigen to be foreign and attacks it.A person with type A blood can't receive type AB blood, either, for the same reason. He can, however, accept type O blood. person with type A blood cannot receive type B blood. The reason is immunological. A person with type A blood does not have type B antigens; thus, his immune system considers the type B antigen to be foreign and attacks it.
Most of us, for example, know our blood type in the ABO system, i.e. A-positive, A-negative, B-positive, B-negative, O-positive, O-negative, AB-positive, AB-negative. (The positive or negative refer to the so-called Rhesus factor).Persons with blood type O are so-called universal donors, since they can give blood to anyone having any of the blood types A, B, O or AB.Persons with blood type AB on the other hand, can give blood only to persons with AB blood type.ersons with blood type O are so-called universal donors, since they can give blood to anyone having any of the blood types A, B, O or AB. Persons with blood type AB on the other hand, can give blood only to persons with AB blood type.