boonkgang6821
15.07.2019 •
Biology
It is impossible for humans to be at the bottom of the food chain.a. true, because plants do not undergo cell respirationb. false, because humans are omnivoresc. true, because humans are not producers d. false, because humans carry out photosynthesis
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Ответ:
i believe the answer is c.true, because humans are not producers
Explanation:
Ответ:
Explanation:
Alveoli in lungs are the sites of exchange of gases (O² and CO²) for respiration. Hence, they are lined with thin squamous epithelium, which allows diffusion of gases.
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