Answer:
50 years
Explanation:
The first human spaceflight named Vostok 1 was launched on April 12, 1961. This spaceflight took along with it Yuri Gagarin, a Cosmonaut who came from the Soviet Union. Thus this scientist was the first to ever travel to space and enter into orbit.
The formal end of the space shuttle program was marked in August 31, 2011. The last shuttle, STS-135 that was flown by Atlantis was retired on July 2011. So the time duration between the first human spaceflight and the end of the space shuttle program spanned some 50 years.
<span>An Act of Congress that violates the Constitution may be declared unconstitutional by the courts. The judicial declaration of an Act's unconstitutionality does not remove the law from the statute books; rather, it prevents the law from being enforced</span>
True, A pledge is a solemn "promise" to another individual to "do something". Thus, undertaking the task "promised"
I hope that makes sense. :)
Answer:
<u>"the independent variable—whether or not the students receive money for doing puzzles—has a significant effect, such that students in the paid group spend less time doing puzzles during their break time".</u>
Explanation:
<u>Independent variable:</u> In psychological research, the term "independent variable is described as a variable that is being manipulated, altered or changed by an investigator or researcher in order to see or notice its effect on the dependent variable of the given study. Thus, the independent variable has a direct impact on the dependent variable.
<u>In the question above, the research finds that "the independent variable—whether or not the students receive money for doing puzzles—has a significant effect".</u>
