While having her hearing tested, sydney is asked to signal when she hears a sound through the headphones. sydney's hearing test is similar to determining: ?

The way that Sydney’s hearing test was processed is similar in determining the absolute threshold. The absolute threshold is where the stimulus at the lowest level is being detected by an individual. Such examples are touching, light or even sound. It could be seen in the scenario above as Sydney’s hearing is being tested.

trade regulation is a field of law, often bracketed with antitrust (as in the phrase “antitrust and trade regulation law”), including government regulation of unfair methods of competition and unfair or deceptive business acts or practices. antitrust law is often considered a subset of trade regulation law. franchise and distribution law, consumer protection law, and advertising law are sometimes considered parts of trade regulation law.

in general the theory of economics says that the more open to trade a country is the better   the result for the same country and the whole economies.

in real life countries impose taxes, quotas, etc which is not so good for the economies.

this kind of commercial war between the usa and china is slowing down the growth of the whole world so we can say that it is a draw back of trade regulations. and the free trade agreements are benefits of trade regulations.

a. the moon was locked into orbit by the earths gravity as it was passing by and capture hypothesis i think