Explain why humans need a circulatory system to transport oxygen, while single-celled organisms like the amoeba do not.

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asked Jul 25, 2021 155k views

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Strangeoptics · Answer 1 · 2021-07-31T17:56:48+0000

Answer: Single cell organisms dont need a respiratory system because oxygen and carbon-dioxe diffuses between their body tissues and the enviorment.

Explain why humans need a circulatory system to transport oxygen, while single-celled organisms like the amoeba do not.

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Explain why humans need a circulatory system to transport oxygen, while single-celled organisms like the amoeba do not.​

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Explain why humans need a circulatory system to transport oxygen, while single-celled organisms like the amoeba do not.