An impromptu speech is different from other types because it has

Fineman Associates Public Relations of San Francisco has become well known for ________

A) becoming the world's largest public relations agency B) compiling a list of the year's worst public relations disasters C) winning the most public relations awards in history D) paying the highest salaries among public relations agencies E) presenting the Fineman Cup for Public Relations Excellence

A boundary that has this property is capable of having material pass through it, to and from the environment

A) porous B) static C) permeable D) malleable