External Respiration takes place in the Trachea. When oxygen and co2 "switch" its where they connect and making this external respiration!
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Answer:
evaporate more rapidly
Explanation:
the faster the water evaporates the more salt it leaves behind.
Answer:
A body attacks a transplanted organ because it does not recognize it as being made of self cells. It knows this because the new organ has antigens, a form of proteins that coat the organ. When a body's immune system recognizes these antigens and they are not similar enough to the body's own antigen's, it attacks to try and keep itself safe and healthy.
Explanation:
The formation of new viruses.
