Biology, asked by Shwetarana2693, 4 months ago

1. why do animals and humans have circulatory system??

Answers

Answered by aqsanajeebniazi

Answer:

Circulatory systems in animals (ESG8X) Transport systems are crucial to survival. Unicellular organisms rely on simple diffusion for transport of nutrients and removal of waste. Multicellular organisms have developed more complex circulatory systems.

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