Because of the gender class? I think that's why but im not entirely sure im sorrys!
Answer:
where is the question?????
Abflug is masculine so it uses “der”
"Wo wohnst du?" = <span>Where do you live/reside (inform.)
</span><span>"How are you?" = Wie geht es dir? (inform.)
"Who are you?" = Wer bist du? (inform.)
</span>
If you need more help let me know!
Answer:
es ist entdecken / it is entdecken
Explanation: