Why do you think it is important to maintain biodiversity in ecosystems? What is prohibiting humans from doing so? Research the HIV and H1N1 viruses. Why do you think the HIV virus is a successful parasite?

How can a geological time scale best be reconstructed? a) comparing vestigial structures in living species b) comparing homologous structures in living species c) examining homologous structures in fossil remains d) examining the written records of scientists from past cultures

One function of the immune system is to attack the foreign cells to protect the body. in organ translate , the body recongnizes that the new organ is made of foreign cells. wha kind of medicine would you give a patient to increase the chances of transplate success

How can you tell the difference between rough er from smooth er?