The smallest wave will have an amplitude of 3 if the two waves shown were to combine. Remember that amplitude is the maximum displacement of two waves and the result of two wave's amplitude is the sum of the two wave's displacements at the same location.
I want to say yes but if I were you I would get more than just my answer to confirm it. So if another person says yes then go ahead and answer yes but I wouldn't just take my word for it
<span>Classification systems change over time for a variety of reasons, but the basic gist of the matter is that as we learn more about the natural world around us, these systems change to fit in with and around the new information. Whilst it is worth learning the current system of classification, it is also important to remember that this could always change at any time.</span>
I believe the correct answer is A.