1) closed circulation
2) The spleen can easily be damaged if someone suffers a sever injury to the stomach. When the spleen is damaged, it can cause pain in the abdomen, dizziness, and pain in the left shoulder.
Answer:
Chronic hepatitis B and hepatitis D
Cell, the smallest unit that can exist independently
The plasma membrane<span> is described as a "fluid mosaic."</span>
Answer:
The answer is D. One year
