Answer:
Gravity:
Humans and different items become weightless
The ecosystem might disappear into space
The moon, sun, and other materials in the solar system might collide with the earth.
If there is no gravity, the Earth cannot rotate on its own axis. The days and nights will stay as it is.
Everything will float and be unable to move and do the usual actions.
All of the bodies of water that can be found on the Earth such as Lakes, Rivers, Oceans will disappear.
Oceans and Soil are no longer bounded or connected to one another.
Friction:
Everything would slide to the lowest point.
It would be impossible to climb up anything.
