Which was most likely an effect on society that resulted from improvements in blood handling during World War I and World War II?

What are the four basic classes of organic molecules how do they differ structurally and functionally

Long-period comets come from the oort cloud particles in earth’s atmosphere material from the asteroid belt the kuiper belt

According to the cell theory, which describes cells? a. all organisms are composed of multiple cells. b. all cells have the same structure and function. c. cells are found in everything on earth. d. living organisms are not created spontaneously