through the process of photosynthesis.
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The answer is B. They bring oxygen from the air into the body.
The lungs don’t produce or release oxygen so it’s not A. or D. The lungs do not transform oxygen into carbon dioxide cause our bodies need oxygen not carbon dioxide so it’s not C. Hope this helps!
Pumping blood throughout the cardiovascular system
Unicellular organism ...................................................................................................
The theory of continental drift was given a scientific status during the:
1960's.
