Answer:Confederation means a group of nations united together, but are not of the same. State governments usually handle the rights and laws for each citizen within it's 'territory'. therefore, your answer should be:
Explanation:
I think it's A
the cell membrane contain protein molecules
It retains salt and water within the circulation
Answer:
Body systems. Our bodies consist of a number of biological systems that carry out specific functions necessary for everyday living. The job of the circulatory system is to move blood, nutrients, oxygen, carbon dioxide, and hormones, around the body. It consists of the heart, blood, blood vessels,arteries and veins.
Stem cells can specialize into any type of cell in the body
