Answer — Exercise 4
11 - Did you know ...?·Outcomes Pre-Intermediate - Student's Book
Question
Work in groups. Compare your ideas using the words in Exercise 2 and your notes.
Answer
- Yes and no: there are some genetic factors, but other factors are due to the environment.
- Their feet are covered in hairs, which are covered in other hairs. The electric charge on the hairs makes the spider stick to the ceiling.
- Graphene is a very thin layer of graphite, it’s the world’s thinnest material, but incredibly strong.