The Zhou Dynasty. They later on created the Mandate of Heaven.
Hope this helped!
Answer:
As a new day begins in the town of Silverton, its residents have little reason to believe it will be anything other than ordinary. Mother Nature, however has other plans. In the span of just a few hours, an unprecedented onslaught of powerful tornadoes ravages Silverton. Storm trackers predict that the worst is still to come, as terrified residents seek shelter, and professional storm-chasers run toward the danger, hoping to study the phenomenon close up and get a once-in-a-lifetime shot.
The Cabinet includes the Vice President and the heads of 15 executive departments — the Secretaries of Agriculture, Commerce, Defense, Education, Energy, Health and Human Services, Homeland Security, Housing and Urban Development, Interior, Labor, State, Transportation, Treasury, and Veterans Affairs, as well as the Attorney General.
I believe the answer is: increasing generalizability
Generalizability refers to the extend that a conclusion of a research could be applicable to different people. As generalizability goes higher, The reliability of the measurement would be increased. and it could easily be replicable even if the test subjects are drastically altered.
Answer:
Explanation:
Data provided in the question
The ratios are
Second graders to the fourth grader is 
First graders to the second grader is 
Third graders to the fourth grader is 
Now if we multiplying these above three ratios but the last ratio should be reverse
So, it would be
= 
=
Hence, the ratio of first graders to the third graders is
