Explanation:
uses of air is for breathing,for plant to grow
and air pollution can cause global warming that is really harmful
Answer:
c. Instrumentation
Explanation:
In research methods and statistics, mainly there are eight different types of threats associated with the internal validity including experimental mortality, regression, interaction of threats, selection, history, testing, maturation, and instrumentation.
Instrumentation: The term "instrumentation" is described as one of the different types of internal validity threat that encompasses the change in the scores, instruments, or observers that may produce a few changes in the outcomes of a particular study.
In the question above, the given statement represents "instrumentation".
Answer:
Vance Packard's number-one bestsellers - Hidden Persuaders (1957), Status Seekers (1959), and Waste Makers (1960) - taught the generation of Americans that came of age in the late 1950s and early 1960s about the dangers posed by advertising, social climbing, and planned obsolescence.
Explanation:
The Flag Day is on June 14, and there is an anniversary each year on that date. This day commemorates the adoption of the flag, which happened on June 14, 1777.
Answer:
The correct answer is letter "B": The minimal-effects model.
Explanation:
The hypodermic-needle research model is a communication model that suggests that the intended message is <em>received directly and fully accepted by the recipient</em>. I was based on studies of the influence of Nazi propaganda on the mass media and the impact of Hollywood in the 1930s and 1940s.
The minimal-effects model, on the contrary, is mainly used in political science in order to explain that political campaigns <em>convert and convince voters only partially</em>.