Erythropoiesis (from Greek 'erythro' meaning red and 'poiesis' meaning to make) is the process which produces red blood cells (erythrocytes).
Birds and mammals have the following characteristics in common: they are vertebrates, meaning they have an internal skeletonthey are warm-bloodedthey breathe using lungs, so â¦ have full respiratory systems they have circulatory systems. Most mammals give live birth, but there is a sub-group known as monotremes, which are the egg-laying mammals. 2  This group includes just the platypus and the echidna. 3  They are still mammals because, like all mammals, they feed their young on mothers' milk.
mammals are most closely related t : A, amphibians B. birds C. arthropods tks. Biology All organisms in group 2(birds, fish, mammals, echinoderms, amphibians) except _____ are thought to share a common ancestor that possessed many of the same characterisitcs as the modern lancelets. A)echinoderms B)fish C)amphibians D)birds E)mammals math