why is it possible that the niagara falls would disappear after thousand years?

[brian charles]

hint: the disappearance is a gradual process;not due to deforestation or volcanism.

[esnagel]

Erosion?

[robort king]

erosion

[zacm731]

if it dosent get its water from an ocian then i would say lack of water.

[Anamia]

erosion

idiot