Answer:
The organs- thymus, tonsil, appendix and spleen constructs the lymphatic organ system and the lymph nodule is the collection of small lymphoid tissue.
Explanation:
The most significant part of immune and vascular system is the Lymphatic system. This system is consisted of some organs, like- spleen, thymus, tonsil and appendix, mainly named as lymphatic organs. These organs contribute to the function of defend in the immune system.
Lymph nodules, however, are the collective small lymphoid tissue. These nodules are found in the area that is exposed to microorganism and it helps in fighting them.
Answer: natural selection
D i believe, i could be wrong though
Answer:I think the first one
Explanation:
