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Sagot :
As organisms became more active, a four-chambered heart was selected for because of its ability to separate oxygenated and deoxygenated blood.
Why is a four-chambered more efficient in oxygen delivery than a two-chambered heart?
A four-chambered heart is a heart consisting of four chambers, namely;
- upper ventricle
- lower ventricle
- upper atrium and
- lower atrium
A four-chambered heart is more efficient in oxygen delivery than a two-chambered heart because it does not allow for mixing of oxygenated and deoxygenated blood.
A more active lifestyle by organisms and larger body size selected for a four-chambered heart in organisms.
Therefore, the efficiency of a four-chambered heart is in it's ability to separate oxygenated and deoxygenated blood.
Learn more about four-chambered heart at: https://brainly.com/question/978296
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