There are two basic types of wave motion for mechanical waves: longitudinal waves and transverse waves. The animations below demonstrate both types of wave and illustrate the difference between the motion of the wave and the motion of the particles in the medium through which the wave is travelling.
Updated:Sep 16,2015. Heart disease is the No. 1 killer for all Americans, and stroke is also a leading cause of death. As frightening as those statistics are the risks of getting those diseases are even higher for African-Americans. The good news is, African-Americans can improve their odds of preventing and beating these diseases by understanding the risks and taking simple steps to address them.
The only treatment required is oral administration of iron salts in some palatable form, such as ferrous sulfate. Small red blood cells poorly filled with hemoglobin are characteristic of a hereditary disorder of hemoglobin formation, thalassemia, that is common among Mediterranean peoples and is discussed below. With the exception of iron deficiency and thalassemia, hypochromic microcytic anemia is rare.