How are landslides and mudflows similar? how are they different?

What property is a characteristic of a substance that can be observed and does not change the identity of the substance

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen

Which bonds are found inside a water molecule