Descriptive investigations involve collecting data about a system, but not making tests or experiments.
Making tests belongs to experimental investigations.
Descriptive investigations aim to draw conclusions from observations of the fenomena, while experimental investigations design tests that let the researcher to compare results on different conditions with a control situation.
There is also the so called comparative investigations which collect data from under different conditions but do not include the control situtation.
Answer:
Two
Explanation:
Federalism is a system of government that creates two relatively autonomous levels of government, each possessing authority granted to them by the national constitution.
Answer:
The Structure Group
Explanation:
Of the two groups, the structure group is going to solve the test problems in a better way since this group is asked to study the problem in structural form. This approach will allow the group to investigate the problem systematically and in an organized way. The group that is tasked to memorize the problem will only remember the problems, and by memorizing alone will not help the group to find out the solution.
If it occurred in the years 1915 and 1935, the most significant event in the America history was that women granted the right to vote :)