Explain what distinguishes medicines from drugs and why medicines are drugs but now on drugs and medicines

What are your thoughts on nonhuman trials? do you feel that testing should be done on animals? what are the advantages and disadvantages with nonhuman trails?

When comparing the digestive and urinary system, we can conclude that they both

By 2 weeks after fertilization the morula has implanted into the uterine lining and transforms into a(n) . this time is when the , or the organ that will provide nourishment to the fetus by exchanging nutrients and waste products, begins to develop.