In a Biology scientific report there will always be factors that change even if its by a little bit. In order to increase the “Reliability” of your conclusion or experiment you are required to do your experiment multiple times. Obviously in this case things such as the scale sensitivity will change according to the scale you use as well as if it is accurately set to scale but usually you will get a change in answer. The other thing you need to remember is that when the apple was originally measured they used another measuring tool to you therefore altering your answer ❤️
The answer is tectonic waves. Tectonic referring to the plates that create earths surface.
