Question

how many types of hearts are present?​

Answer 1

Answer:

As in other animals, the heart drives blood throughout the body. Deoxygenated blood enters the sinus venosus and flows into the atrium, Moore said. The atrium then pumps the blood into the ventricle. The ventricle has thicker, more muscular walls, and pumps the blood into the bulbus arteriosus.

Explanation:

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Answer 2

Answer:

There is only one heart for mammals.and some organism like amoeba and hydra they doesn't have heart❤️❤️❤️❤️❤️ it send it's materials through diffusion and osmosis

1. This is ❤️❤️❤️ not a biological heart this is love heart so don't think any bad
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