The answer is: his study does not qualify as an experiment. For the study to be an experiment, Dr. Kline would have to manipulate the independent variable in a group (for example, apply a certain treatment) and also have a control group to which he doesn’t apply such treatment.
In this case, the study is an observational study because he only observed the subjects that were in the zoo that morning and measured the variable of his interest, that is the environmental attitude of the visitors, he did not apply a certain treatment to the group nor manipulate any variable.
Answer:
In ancient Japan, Shintoism and Buddhism combined into a uniquely Japanese form of religion. During the Fujiwara regency, the military class rose around the ideals of the samurai, and large military families formed around powerful political figures.
Answer:
a strain of corn whose yield varies with the amount of nutrients in the soil.
a line of dairy cows that increases milk yield in relation to feed amount
Explanation:
Answer: The correct answer is : Use the Nullification theory
Explanation: It is a legal theory with which a state has the right to invalidate or annul any federal law that said state has determined is unconstitutional in relation to the Constitution of the United States. This theory has not been confirmed by federal courts.
