Listen to the recording and complete the summary below with ONE WORD ONLY. Write down your answers in the Comment section.
Paul was interested in the 1 __________________ so took an ecology course at university. The course included a section on 2 _____________ and an interesting lecture caused him to quickly change his degree.
Paul says working in paleontology can be difficult and he describes the conditions as 3 ____________. However, the discovery of a 4 _______________ from an ancient animal made him realize he had made the right choice.