How does the composition of the inner and outer core explain this theory?

Aplant may open end close its stomata to prevent excess water loss and maintain

Under the soviet system, the government a. controlled all forms of communication. b. allowed newspapers to print whatever they wanted. c. controlled editorials but not the reporting of news. d. encouraged access to a wide variety of news sources. select the best answer from the choices provided a b c d

Why are common names a problem for scientist?