Question

what will happen if all rocks disappear​

Answer 1

Answer:

very interesting question

Answer 2

Answer:

The "NO ROCKS ON EARTH" condition would be very difficult to envision. That would mean that there would be no crust, separating the mantle from the asthenosphere. The heat exchange from that condition would cool the mantle and a new crust would form. Of course, the atmosphere would also include all of the water of the oceans, lakes, rivers, etc. which the heat from the exposed mantle would prevent from forming.

The whole concept of "no rocks" becomes untenable.