When you compare all organisms around us, even the smallest ones, you see that they have Life; You could even see this as a trend of some sort.
I'd have to say that the list of choices doesn't go far enough.
Advances in Astronomy have been occurring for at least the past two millennia (2000 years). Maybe longer.
5.
explanation: the answer is 5
Water has a high specific heat capacity. Oil has a smaller heat capacity.