Question

Explain evolution of heart in animals ? ​

Answer 1

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The Evolution of the Heart. The evolution of the heart has enabled oxygen and nutrients to be pumped efficiently to body tissues, enabling the oxygen greedy brain to develop…. Invertebrate animals have a simple circulatory system, as opposed to a heart.

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Answer 2

Hello

is this Ritika ?

friend of Nicky sis ?

please reply me as i am missing my sister a lot and i wanna meet her .

thank u