The transfer of heat by the movement of air
currents in Earth's atmosphere is an example
of -

Which of these conditions most likely produces an unstable isotope?

An observation that requires measurement is called quantitative observable or qualitative

The characteristics 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 an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.