It has a d<span>ense cluster of lymphocytes and macrophages in the medulla? Hope this helps....</span>
All 4 groups of biomolecules will contain Carbon. C: Carbon has 4 electrons in its outer shell H: Hydrogenhas 1 electron in its outer shell O: Oxygen N: Nitrogen P: Phosphorus S:Sulfur These elements combine in different ways to form the biomolecules. All 4 groups of biomolecules will contain Carbon.
