An earthworm, Annelida [= ringed] has up to five pairs of hearts.
An earthworm, Annelida [= ringed] has up to five pairs of hearts.
An earthworm does not have any heart at all. But they do have an organ that acts similar to a heart and is usually called aortic arc.
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aortic arches is another term for heart, and an earthworm has 5.
There is 1 lone pair on the phosphorus atom in PH3.
An earthworm has 5 eyes, that your answer!!!
There are a infinitely growing number of bond pairs between atoms.
It is seven (7) centimeters.
none
3
5