Natural science can be broken into two main branches: life science (or biological science) and physical science. Physical science is further broken down into branches, including physics, astronomy, chemistry, and Earth science. All of these branches of natural science are divided into many further specialized branches (also known as fields), and each of these is known as a natural science.
When in Rome, do as the Romans do definition When visiting a foreign land, follow the customs of those who live in it. It can also mean that when you are in an unfamiliar situation, you should follow the lead of those who know the ropes.
In 133 BC, Rome was a democracy. Little more than a hundred years later it was governed by an emperor. This imperial system has become, for us, a by-word for autocracy and the arbitrary exercise of power. At the end of the second century BC the Roman people was sovereign. True, rich aristocrats dominated politics. In order to become one of the annually elected 'magistrates' (who in Rome were concerned with all aspects of government, not merely the law) a man had to be very rich.