Question

give two reasons why the falls cannot freeze completely​

Answer 1

Freezing water requires colder temperatures as the volume and velocity of water increase. And there's a lot of water at Niagara Falls, moving very quickly: ... Even with below-freezing weather, the temperature is never cold enough to freeze that amount of rapidly flowing water.

hope you like it ♥️

Answer 2

Answer:

Waterfalls are unlikely to freeze, since water keeps on moving and along the fall the frozen ice can collapse. Moving water does not tend to freeze. When water moves even some portions that have frozen get disrupted and they collpse leading to the river having its way.