Well for correct answers/results, for example when they are making vaccines, these are weakened harmful or disease which can cause sorts of viruses... and a little of the virus then it would not be a vaccine or simply would not build you antibodies, and too much of it would not also not a vaccine since it will already inflict a disease or possibly be deadly or fatal <span> </span>
When measuring volume it is important to use the correct tools and units to attain the greatest accuracy because of standardization .By using standardization every item can be classify into a group of objects as it will be easy to identify the item.
In some cases accuracy is very important for example while measuring the volume,if tools are incorrect or there is an error present while measuring a volume of high pressure steam boiler then a small error can create havoc .As the vessel may blast due to incompetent design and may cause damage to human life.
It is this way because if it adds another proton it becomes more positive that nuetral, and if you add an electron it just makes the atom more dense. That is why the answer is compound. Hope this helped :)
