Which environmental disturbance has not been linked to global climate change?
A. Increased storm severity
B. Higher sea-surface temperatures
C. Ocean acidification
D. Excess nutrient levels

D. Excess nutrient levels

Explanation:

Although some aspects of global climate change are disputed, most scientists agree that increased concentrations of atmospheric carbon dioxide due to the burning of fossil fuels have increased sea surface temperatures and the frequency of severity of major storms. In addition, increased amounts of dissolved carbon dioxide has lowered ocean pH by about 0.1 unit in the past 200 years.

Excess nutrient levels are caused primarily by local development rather than global climate change. Nutrients are released into coastal waters by activities such as logging, agriculture, and the release of untreated sewage.

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.