15. In geology, what is the layered feature called, that marks the extinction of the dinosaurs 60m years ago?
16. The 2nd law of thermodynamics says: Things always get more untidy. What thermodynamic property is the measure of tidiness?
20. In no more than 2000 words, discuss the patriarchal society in Jane Austen's Pride and Prejudice of 1813? 20. What is the historical period 1811-1820 known as?