Answer:
the study of the structure, reaction, and composition of different kinds of substances
Explanation:
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Answer:
provides protection to the valves and heart chambers.
Explanation:
With the ever improving technology medicine has been revolutionized to help in so many ways. There are now improvements to many things medicine can do like look for new pharmaceuticals, correct mistakes in surgeries, prolong life, and help provide in depth research into diseases and their anecdotes or cures.
Red blood cells carry oxygen.