Explanation:
Sweden is a northern European country located on the Scandinavian Peninsula. Its topography consists mainly of flat or gently rolling lowlands but there are mountains in its western areas near Norway. Its highest point, Kebnekaise at 6,926 feet (2,111 m) is located here
<u>Answer:</u>
<em>Anytime observations need to be clarified. When an unusual condition need to be shown for later reference.</em>
<u>Explanation:</u>
Instead of just recording the data the is sometimes important to be sketched out as the data observed is needed to be clarified and also sometimes there is an unusual condition that occurs and hence, it is important to sketch it so that it can be used for later reference.
<em>Therefore, when we are aware of the situation we need not sketch the data.</em>