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Why do animals have blood?

Updated: 10/8/2023
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Wiki User

16y ago

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Vertebrates are a large group of animals that include fish, amphibians, reptiles, birds and mammals like us.

All vertebrates have hearts because they have a close circulatory system which requires the heart to pump the blood around the body. The number of chambers in regular heart vary from two to four.

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9y ago
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16y ago

because they need 2 get oxygen and nutrients 2 they're organs, just like humans.

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13y ago

The same reason we do, since we are animals too. We have a heart to pump oxygen and nutrients aronud the body and even waste products to be taken to the correct places

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10y ago

The heart is typically located in the upper abdomen of an animal. Although this can vary in some species of invertebrates, that is the usual location.

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11y ago

all mammmals and many other animals

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Q: Why do animals have blood?
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