Why are embryonic useful for medicine?

Is the stem of a gladiolus adapted for survival during poor environmental conditions? Why does sound travel qiuckest through a solid? Why is the lower course of a river more likely to flood? True or false The skin provides the first defense against invasion by pathogens? Which part of the air do plants breathe in? What is the name of gaseous water? Is a yellow flame of a Bunsen burner hotter than the blue flame? How is the coloured precipitate that is responsible for the positive test formed for reducing sugars? Will sticking a bubblegum wrapper in a power outlet break anything? What is the differecne between reticulocyte and erythrocyte? What compounds in the liquid phase can be considered an electrolyte carbon dioxide sodium chloride distilled water or hydrogen peroxide? Isotopes to calculate atomic mass for zinc? What does the distances from sun to earth and moon from earth mean? Plants that are in an ecosystem are called flora true or false? What was the first used to discover Neptune? What are benefits from tides? How many potatoes does china produce in 1 year? What element of style is used in this passage? Who discovered wheaton? Why the top of a lightning rod is made sharply pointed?