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.
In birds it curves to the right and in all other vertebrates there are more than one main artery leaving the heart. 5.Mammals have a diaphragm. A sheet of muscle and tendon that separates the body cavity into two sections.ammals are a type of animals in the world. There are thousands of types of mammals. But certain characteristics are common in all the mammals. There are five things all mamm â¦ als have in comman. These are the common characteristics of mammals.