Help please if its right i'll give brainiest The state of existing before or previous to something else is known as ...the cell theory states that all existing cells came from other cells.

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.

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?

Areaction in which products can react to re-form reactants is