The stomach is the only part of the alimentary canal with three muscular layers. Why does the stomach need three layers of muscle

How does a lytic infection differ from a lysogenic infection?

What is the correct order of cell division? include what happens in each phase

Which nutritional supplement is correctly paired with the health issue it addresses? which nutritional supplement is correctly paired with the health issue it addresses? vitamin c supplementation prevent depression. calcium supplementation increases iq. vitamin e supplementation prevent birth defects. vitamin b12 can vegans maintain health?