Veins take blood back to the heart. which gas would be most abundant in a vein that takes blood from muscle cells in the arm back to the heart? a carbon dioxide b oxygen  c nitrogen  d hydrogen

Lymphatic vessels remove excess fluid from tissues. often after mammexront( the surgical procedure to remove of all or part of a breast) the lymphatic vessels draining the arm are damaged. explain a consequence of this damage. what can be done to reduce the symptoms?

Explain how the political influence of african americans leaders became weaker.

Draw a simple labelled diagram if a collenchyma tissue