Adoctor uses an instrument(s) that emits light and allows the doctor to view the inside of a patient’s intestine. what is the doctor most likely using? - a telescope, a microscope, laser beams, or fiber optics

Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air