Answer: It's an EXPERIMENT
Explanation: Experiment is done when we apply anything to a samples or conditions in other to study another sample or conditions.
Observation is done when, we study samples or conditions in it's natural way, without application of anything that may alter it's result.
Because the researcher has applied fertilizer to one side and did not apply to the other side, that means he has performed an experiment. Since he wasn't observing the two sample in it's natural way without any external application.
The answer is B: Since most southern states would rather agree with the DOE instead of the Constitution, they are going to stand by to honor the details written in the DOE.
The two types of drama the Greeks preformed at religious festivals was comedies and tragedies.
Answer:
E. Construct Validity.
Explanation:
Construct validity is mostly used in social sciences and psychology. It is mainly a device used almost exclusively in social sciences, psychology and education.
For example, you might design whether an educational program increases artistic ability amongst pre school children. Construct validity is a measure of whether your research actually measures artistic ability, a slightly abstract label.
Just like case above that has to deal Dr. Ross looking to examine if the certain indicators which tends to complete her romantic attraction measurement are truly related to one another and make for an accurate representation of the variable she is researching.