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Answer: B, C, E
Explanation:
We breathe in oxygen, which travels to the alveoli in our lungs. The alveoli "gives" oxygen to the capillaries, which carry blood. The capillaries "give" its carbon dioxide (which is what oxygen becomes when used by our body) to the alveoli. The carbon dioxide travel back out when we exhale. Although, the air we breathe out has some oxygen content.
Lichens are the photosynthetic organisms.
They are homologous because they have similar structure regardless of purpose
