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.
Blood group AB is very rare and although AB blood types are able to receive any type of blood they are not able to donate blood to persons that are not blood group AB. Type O negative blood is considered the universal blood type. People with type O negative blood are called universal donors because type O negative blood is compatible to any blood recipientâs type. Ideally the donorâs blood types should always be an exact match to the recipientâs blood type. Universal donors should only be used in the case of medical emergency where there is an unavailability or shortage of the patientâs blood type or when a blood transfusion needs to be performed immediately, not allowing the time to cross type the blood ...