ЧТО ВЫБРАТЬ:
1) How have you / how did you get interested in ecology?
2) what ecological problems do you want/are you wanting to study?
3) How long did you / how long have you been interested in these problems?
4) Are you going / will you go to university to become an ecologist?
5) Is it necessary / does it necessary for an ecologist to know one or more than one foreign language?
6) Where are you going to work / will you be working?
7) Why is / why does this professional important nowadays?
8) What subjects will you need / do you need to study to be an ecologist?
Вот я в ответе написала не до конца. То есть не всю предложнию