1. The core of the Earth is made of nickel and which other element?

2. What is the name of the part of our eye that is coloured ?

3. What is the lowest level in the Earth's atmosphere?

4. Botany is the study of what?

5. What does a chronometer measure?

6. What is the name for a young shark?

7. In which part of your body will you find a retina?

8. Bananas are rich in which substance?

9. Which English scientist is best known for his work on GRAVITY?

10. What kind of object is 'Alpha Proxima'