Which statement is accurate? The diagram shows horizontal rock layers.

Help I’m being timed!!!

On a distance vs time graph the line of an object at rest is a

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

How are the terms group and period used on the periodic table