<span>The endosymbiotic theory deals with the origins of mitochondria and chloroplasts, two eukaryotic organelles that have bacteria characteristics. Mitochondria and chloroplasts are believed to have developed from symbiotic bacteria, specifically alpha-proteobacteria and cyanobacteria, respectively.</span>
The best answer to go with is c you’re welcome help it help
Answer:
<h2>lungs</h2>
Explanation:
An erythrocytes carries oxygen on the lungs.
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The answer is B since you have to be able to prove/elaborate on the topic sentence
