<span>The Core and an inhomogeneous Mantle cause diffraction of P-waves. </span>P-waves<span> are a type of elastic seismic wave </span><span>that travel through a continuum and are the first </span>waves<span> from an earthquake to arrive at a seismograph.</span>
His measurements are precise since his pH values are close to each other in a way that it was repeated in all measurements. On the contrary to accuracy, it is the closeness to the actual pH value he should have achieved. Therefore, Jose's results are precise but not accurate since his value is not close to the actual value of pH 4.
A because cation is positive and anion is negative evening it out at constant.
