This is an old question that is no longer in use.
Images may be missing and the information may be dated.
Which alternative is true?
Fertilisation is good, but not eutrophication, which is when too many nutrients are added.
Körkortonline.se offers driving licence theory tests. This is an example of an explanation of a test question. Languages: English (driving licence test in Sweden), Swedish (driving licence test in Sweden) and Arabic (driving licence test in Sweden).
More examples of explanations: